pkg/front_end/parser_testcases/error_recovery/keyword_named_formal_parameter.dart.intertwined.expect

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(abstract)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  inPlainSync()
                  listener: handleIdentifier(abstract, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, abstract, 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(abstract)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(abstract, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, abstract, 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(abstract)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(abstract, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, abstract, 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(abstract)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(abstract, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, abstract, 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(abstract)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(abstract, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, abstract, 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(abstract)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(abstract, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, abstract, 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(as)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  inPlainSync()
                  listener: handleIdentifier(as, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, as, 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(as)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(as, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, as, 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(as)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(as, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, as, 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(as)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(as, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, as, 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(as)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(as, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, as, 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(as)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(as, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, as, 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(assert)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                  listener: handleIdentifier(assert, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, assert, 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(assert)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                    listener: handleIdentifier(assert, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, assert, 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(assert)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                    listener: handleIdentifier(assert, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, assert, 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(assert)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                    listener: handleIdentifier(assert, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, assert, 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(assert)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                    listener: handleIdentifier(assert, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, assert, 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(assert)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(assert, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
                    listener: handleIdentifier(assert, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, assert, 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(async)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  inPlainSync()
                  listener: handleIdentifier(async, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, async, 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(async)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(async, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, async, 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(async)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(async, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, async, 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(async)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(async, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, async, 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(async)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(async, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, async, 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(async)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(async, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, async, 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(await)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  inPlainSync()
                  listener: handleIdentifier(await, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, await, 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(await)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(await, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, await, 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(await)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(await, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, await, 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(await)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(await, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, await, 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(await)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(await, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, await, 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(await)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    inPlainSync()
                    listener: handleIdentifier(await, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, await, 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(break)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                  listener: handleIdentifier(break, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, break, 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(break)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                    listener: handleIdentifier(break, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, break, 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(break)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                    listener: handleIdentifier(break, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, break, 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(break)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                    listener: handleIdentifier(break, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, break, 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(break)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                    listener: handleIdentifier(break, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, break, 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(break)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(break, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
                    listener: handleIdentifier(break, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, break, 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(case)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                  listener: handleIdentifier(case, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, case, 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(case)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                    listener: handleIdentifier(case, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, case, 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(case)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                    listener: handleIdentifier(case, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, case, 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(case)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                    listener: handleIdentifier(case, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, case, 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(case)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                    listener: handleIdentifier(case, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, case, 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(case)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(case, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
                    listener: handleIdentifier(case, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, case, 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(catch)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                  listener: handleIdentifier(catch, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, catch, 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(catch)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                    listener: handleIdentifier(catch, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, catch, 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(catch)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                    listener: handleIdentifier(catch, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, catch, 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(catch)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                    listener: handleIdentifier(catch, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, catch, 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(catch)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                    listener: handleIdentifier(catch, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, catch, 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(catch)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(catch, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
                    listener: handleIdentifier(catch, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, catch, 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(class)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                  listener: handleIdentifier(class, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, class, 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(class)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                    listener: handleIdentifier(class, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, class, 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(class)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                    listener: handleIdentifier(class, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, class, 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(class)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                    listener: handleIdentifier(class, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(})
                  listener: endFormalParameter(null, null, null, class, 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(class)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                    listener: handleIdentifier(class, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(:)
                    parsePrecedenceExpression(:, 1, true)
                      parseUnaryExpression(:, true)
                        parsePrimary(:, expression)
                          parseLiteralInt(:)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(:, })
                  listener: endFormalParameter(null, null, null, class, 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(class)
                  listener: handleType(int, null)
                  ensureIdentifier(int, formalParameterDeclaration)
                    reportRecoverableErrorWithToken(class, Instance of 'Template<(Token) => Message>')
                      listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
                    listener: handleIdentifier(class, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseLiteralInt(=)
                            listener: handleLiteralInt(42)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, })
                  listener: endFormalParameter(null, null, null, class, 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(const)
                listener: handleType(int, null)
                ensureIdentifier(int, formalParameterDeclaration)
                  reportRecoverableErrorWithToken(const, Instance of 'Template<(Token) => Message>')
                    listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'const' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: const}], const, const)
                  listener: handleIdentifier(const, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue())
                listener: endFormalParameter(null, null, null, const, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })