parseUnit(void)
  skipErrorTokens(void)
  listener: beginCompilationUnit(void)
  syntheticPreviousToken(void)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl()
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(, null, , Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(abstractX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(abstractX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, abstractX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(abstractX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(abstractX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, abstractX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(abstractX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(abstractX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, abstractX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(abstractX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(abstractX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, abstractX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(abstractX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(abstractX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, abstractX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(abstractX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(abstractX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, abstractX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(asX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(asX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, asX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, asX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, asX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, asX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, asX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, asX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(assertX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(assertX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, assertX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(assertX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(assertX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, assertX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(assertX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(assertX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, assertX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(assertX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(assertX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, assertX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(assertX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(assertX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, assertX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(assertX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(assertX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, assertX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(asyncX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(asyncX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, asyncX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asyncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asyncX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, asyncX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asyncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asyncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, asyncX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asyncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asyncX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, asyncX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asyncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asyncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, asyncX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(asyncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(asyncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, asyncX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(awaitX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(awaitX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, awaitX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(awaitX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(awaitX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, awaitX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(awaitX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(awaitX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, awaitX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(awaitX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(awaitX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, awaitX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(awaitX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(awaitX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, awaitX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(awaitX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(awaitX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, awaitX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(breakX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(breakX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, breakX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(breakX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(breakX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, breakX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(breakX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(breakX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, breakX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(breakX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(breakX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, breakX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(breakX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(breakX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, breakX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(breakX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(breakX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, breakX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(caseX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(caseX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, caseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(caseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(caseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, caseX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(caseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(caseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, caseX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(caseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(caseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, caseX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(caseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(caseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, caseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(caseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(caseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, caseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(catchX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(catchX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, catchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(catchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(catchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, catchX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(catchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(catchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, catchX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(catchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(catchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, catchX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(catchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(catchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, catchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(catchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(catchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, catchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(classX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(classX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, classX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(classX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(classX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, classX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(classX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(classX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, classX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(classX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(classX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, classX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(classX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(classX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, classX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(classX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(classX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, classX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(constX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(constX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, constX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(constX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(constX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, constX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(constX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(constX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, constX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(constX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(constX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, constX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(constX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(constX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, constX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(constX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(constX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, constX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(continueX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(continueX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, continueX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(continueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(continueX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, continueX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(continueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(continueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, continueX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(continueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(continueX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, continueX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(continueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(continueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, continueX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(continueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(continueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, continueX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(covariantX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(covariantX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, covariantX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(covariantX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(covariantX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, covariantX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(covariantX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(covariantX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, covariantX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(covariantX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(covariantX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, covariantX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(covariantX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(covariantX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, covariantX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(covariantX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(covariantX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, covariantX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(defaultX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(defaultX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, defaultX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(defaultX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(defaultX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, defaultX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(defaultX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(defaultX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, defaultX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(defaultX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(defaultX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, defaultX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(defaultX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(defaultX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, defaultX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(defaultX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(defaultX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, defaultX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(deferredX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(deferredX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, deferredX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(deferredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(deferredX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, deferredX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(deferredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(deferredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, deferredX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(deferredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(deferredX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, deferredX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(deferredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(deferredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, deferredX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(deferredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(deferredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, deferredX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(doX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(doX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, doX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(doX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(doX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, doX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(doX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(doX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, doX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(doX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(doX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, doX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(doX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(doX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, doX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(doX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(doX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, doX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(dynamicX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, dynamicX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(dynamicX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, dynamicX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(dynamicX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, dynamicX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(dynamicX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, dynamicX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(dynamicX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, dynamicX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(dynamicX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(dynamicX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, dynamicX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(elseX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(elseX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, elseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(elseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(elseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, elseX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(elseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(elseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, elseX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(elseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(elseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, elseX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(elseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(elseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, elseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(elseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(elseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, elseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(enumX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(enumX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, enumX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(enumX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(enumX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, enumX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(enumX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(enumX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, enumX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(enumX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(enumX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, enumX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(enumX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(enumX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, enumX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(enumX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(enumX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, enumX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(exportX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(exportX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, exportX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(exportX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(exportX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, exportX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(exportX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(exportX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, exportX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(exportX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(exportX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, exportX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(exportX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(exportX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, exportX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(exportX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(exportX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, exportX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(extendsX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(extendsX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, extendsX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extendsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extendsX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, extendsX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extendsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extendsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, extendsX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extendsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extendsX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, extendsX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extendsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extendsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, extendsX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extendsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extendsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, extendsX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(extensionX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(extensionX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, extensionX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extensionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extensionX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, extensionX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extensionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extensionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, extensionX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extensionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extensionX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, extensionX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extensionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extensionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, extensionX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(extensionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(extensionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, extensionX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(externalX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(externalX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, externalX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(externalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(externalX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, externalX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(externalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(externalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, externalX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(externalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(externalX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, externalX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(externalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(externalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, externalX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(externalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(externalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, externalX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(factoryX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(factoryX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, factoryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(factoryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(factoryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, factoryX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(factoryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(factoryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, factoryX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(factoryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(factoryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, factoryX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(factoryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(factoryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, factoryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(factoryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(factoryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, factoryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(falseX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(falseX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, falseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(falseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(falseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, falseX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(falseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(falseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, falseX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(falseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(falseX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, falseX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(falseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(falseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, falseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(falseX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(falseX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, falseX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(finalX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(finalX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, finalX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finalX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, finalX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, finalX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finalX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, finalX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, finalX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finalX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finalX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, finalX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(finallyX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(finallyX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, finallyX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finallyX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finallyX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, finallyX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finallyX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finallyX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, finallyX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finallyX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finallyX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, finallyX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finallyX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finallyX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, finallyX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(finallyX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(finallyX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, finallyX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(forX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(forX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, forX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(forX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(forX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, forX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(forX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(forX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, forX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(forX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(forX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, forX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(forX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(forX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, forX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(forX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(forX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, forX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(FunctionX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, FunctionX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(FunctionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, FunctionX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(FunctionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, FunctionX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(FunctionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, FunctionX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(FunctionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, FunctionX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(FunctionX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(FunctionX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, FunctionX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(getX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(getX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, getX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(getX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(getX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, getX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(getX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(getX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, getX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(getX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(getX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, getX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(getX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(getX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, getX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(getX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(getX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, getX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(hideX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(hideX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, hideX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(hideX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(hideX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, hideX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(hideX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(hideX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, hideX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(hideX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(hideX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, hideX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(hideX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(hideX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, hideX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(hideX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(hideX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, hideX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(ifX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(ifX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, ifX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ifX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ifX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, ifX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ifX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ifX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, ifX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ifX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ifX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, ifX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ifX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ifX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, ifX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ifX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ifX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, ifX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(implementsX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(implementsX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, implementsX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(implementsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(implementsX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, implementsX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(implementsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(implementsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, implementsX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(implementsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(implementsX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, implementsX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(implementsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(implementsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, implementsX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(implementsX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(implementsX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, implementsX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(importX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(importX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, importX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(importX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(importX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, importX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(importX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(importX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, importX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(importX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(importX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, importX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(importX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(importX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, importX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(importX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(importX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, importX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(inX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(inX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, inX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, inX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, inX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, inX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, inX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, inX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(inoutX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(inoutX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, inoutX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inoutX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inoutX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, inoutX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inoutX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inoutX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, inoutX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inoutX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inoutX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, inoutX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inoutX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inoutX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, inoutX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(inoutX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(inoutX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, inoutX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(interfaceX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, interfaceX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(interfaceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, interfaceX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(interfaceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, interfaceX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(interfaceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, interfaceX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(interfaceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, interfaceX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(interfaceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(interfaceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, interfaceX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(isX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(isX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, isX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(isX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(isX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, isX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(isX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(isX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, isX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(isX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(isX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, isX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(isX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(isX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, isX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(isX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(isX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, isX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(lateX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(lateX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, lateX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(lateX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(lateX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, lateX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(lateX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(lateX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, lateX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(lateX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(lateX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, lateX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(lateX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(lateX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, lateX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(lateX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(lateX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, lateX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(libraryX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(libraryX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, libraryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(libraryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(libraryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, libraryX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(libraryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(libraryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, libraryX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(libraryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(libraryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, libraryX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(libraryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(libraryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, libraryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(libraryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(libraryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, libraryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(mixinX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(mixinX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, mixinX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(mixinX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(mixinX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, mixinX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(mixinX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(mixinX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, mixinX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(mixinX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(mixinX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, mixinX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(mixinX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(mixinX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, mixinX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(mixinX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(mixinX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, mixinX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(nativeX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(nativeX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, nativeX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nativeX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nativeX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, nativeX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nativeX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nativeX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, nativeX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nativeX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nativeX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, nativeX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nativeX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nativeX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, nativeX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nativeX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nativeX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, nativeX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(newX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(newX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, newX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(newX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(newX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, newX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(newX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(newX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, newX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(newX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(newX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, newX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(newX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(newX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, newX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(newX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(newX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, newX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(nullX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(nullX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, nullX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nullX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nullX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, nullX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nullX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nullX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, nullX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nullX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nullX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, nullX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nullX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nullX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, nullX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(nullX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(nullX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, nullX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(ofX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(ofX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, ofX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ofX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ofX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, ofX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ofX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ofX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, ofX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ofX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ofX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, ofX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ofX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ofX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, ofX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(ofX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(ofX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, ofX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(onX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(onX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, onX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(onX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(onX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, onX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(onX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(onX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, onX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(onX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(onX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, onX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(onX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(onX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, onX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(onX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(onX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, onX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(operatorX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(operatorX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, operatorX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(operatorX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(operatorX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, operatorX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(operatorX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(operatorX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, operatorX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(operatorX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(operatorX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, operatorX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(operatorX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(operatorX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, operatorX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(operatorX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(operatorX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, operatorX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(outX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(outX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, outX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(outX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(outX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, outX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(outX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(outX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, outX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(outX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(outX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, outX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(outX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(outX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, outX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(outX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(outX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, outX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(partX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(partX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, partX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(partX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(partX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, partX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(partX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(partX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, partX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(partX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(partX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, partX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(partX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(partX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, partX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(partX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(partX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, partX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(patchX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(patchX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, patchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(patchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(patchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, patchX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(patchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(patchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, patchX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(patchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(patchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, patchX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(patchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(patchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, patchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(patchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(patchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, patchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(requiredX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(requiredX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, requiredX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(requiredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(requiredX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, requiredX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(requiredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(requiredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, requiredX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(requiredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(requiredX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, requiredX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(requiredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(requiredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, requiredX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(requiredX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(requiredX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, requiredX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(rethrowX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, rethrowX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(rethrowX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, rethrowX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(rethrowX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, rethrowX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(rethrowX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, rethrowX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(rethrowX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, rethrowX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(rethrowX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(rethrowX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, rethrowX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(returnX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(returnX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, returnX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(returnX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(returnX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, returnX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(returnX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(returnX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, returnX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(returnX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(returnX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, returnX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(returnX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(returnX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, returnX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(returnX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(returnX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, returnX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(setX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(setX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, setX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(setX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(setX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, setX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(setX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(setX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, setX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(setX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(setX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, setX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(setX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(setX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, setX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(setX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(setX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, setX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(showX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(showX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, showX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(showX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(showX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, showX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(showX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(showX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, showX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(showX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(showX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, showX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(showX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(showX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, showX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(showX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(showX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, showX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(sourceX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(sourceX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, sourceX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(sourceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(sourceX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, sourceX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(sourceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(sourceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, sourceX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(sourceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(sourceX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, sourceX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(sourceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(sourceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, sourceX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(sourceX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(sourceX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, sourceX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(staticX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(staticX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, staticX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(staticX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(staticX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, staticX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(staticX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(staticX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, staticX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(staticX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(staticX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, staticX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(staticX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(staticX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, staticX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(staticX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(staticX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, staticX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(superX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(superX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, superX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(superX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(superX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, superX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(superX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(superX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, superX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(superX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(superX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, superX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(superX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(superX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, superX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(superX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(superX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, superX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(switchX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(switchX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, switchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(switchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(switchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, switchX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(switchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(switchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, switchX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(switchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(switchX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, switchX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(switchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(switchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, switchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(switchX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(switchX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, switchX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(syncX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(syncX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, syncX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(syncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(syncX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, syncX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(syncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(syncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, syncX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(syncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(syncX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, syncX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(syncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(syncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, syncX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(syncX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(syncX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, syncX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(thisX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(thisX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, thisX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(thisX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(thisX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, thisX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(thisX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(thisX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, thisX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(thisX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(thisX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, thisX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(thisX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(thisX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, thisX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(thisX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(thisX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, thisX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(throwX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(throwX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, throwX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(throwX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(throwX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, throwX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(throwX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(throwX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, throwX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(throwX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(throwX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, throwX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(throwX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(throwX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, throwX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(throwX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(throwX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, throwX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(trueX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(trueX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, trueX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(trueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(trueX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, trueX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(trueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(trueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, trueX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(trueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(trueX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, trueX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(trueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(trueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, trueX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(trueX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(trueX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, trueX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(tryX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(tryX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, tryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(tryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(tryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, tryX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(tryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(tryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, tryX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(tryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(tryX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, tryX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(tryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(tryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, tryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(tryX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(tryX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, tryX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(typedefX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(typedefX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, typedefX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(typedefX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(typedefX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, typedefX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(typedefX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(typedefX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, typedefX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(typedefX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(typedefX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, typedefX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(typedefX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(typedefX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, typedefX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(typedefX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(typedefX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, typedefX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(varX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(varX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, varX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(varX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(varX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, varX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(varX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(varX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, varX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(varX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(varX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, varX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(varX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(varX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, varX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(varX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(varX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, varX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(voidX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(voidX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, voidX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(voidX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(voidX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, voidX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(voidX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(voidX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, voidX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(voidX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(voidX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, voidX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(voidX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(voidX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, voidX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(voidX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(voidX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, voidX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(whileX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(whileX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, whileX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(whileX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(whileX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, whileX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(whileX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(whileX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, whileX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(whileX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(whileX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, whileX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(whileX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(whileX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, whileX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(whileX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(whileX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, whileX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(withX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(withX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, withX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(withX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(withX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, withX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(withX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(withX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, withX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(withX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(withX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, withX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(withX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(withX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, withX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(withX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(withX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, withX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(int)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                listener: handleIdentifier(int, typeReference)
                listener: handleNoTypeArguments(yieldX)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  listener: handleIdentifier(yieldX, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, yieldX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(yieldX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(yieldX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, yieldX, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(yieldX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(yieldX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, yieldX, 42, 42, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(yieldX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(yieldX, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, yieldX, null, null, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(yieldX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(yieldX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, yieldX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, }, Instance of 'VoidType', null, test, false)
        listener: beginTopLevelMethod(}, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(test, topLevelFunctionDeclaration)
        parseMethodTypeVar(test)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(test, test, false, MemberKind.TopLevelMethod)
          parseFormalParameters(test, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalNamedParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters({)
                parseFormalParameter({, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                  parseMetadataStar({)
                    listener: beginMetadataStar(int)
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
                  listener: handleIdentifier(int, typeReference)
                  listener: handleNoTypeArguments(yieldX)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    listener: handleIdentifier(yieldX, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, yieldX, 42, 42, FormalParameterKind.optionalNamed, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(1, {, })
              ensureCloseParen(}, ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(void)
  listener: endCompilationUnit(414, )