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, null, , Instance of 'VoidType', null, foo, false)
        listener: beginTopLevelMethod(, null, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(foo, topLevelFunctionDeclaration)
        parseMethodTypeVar(foo)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(foo, foo, false, MemberKind.TopLevelMethod)
          parseFormalParameters(foo, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, [, false)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, null, 2, false)
                  ensureIdentifier(), formalParameterDeclaration)
                    listener: handleIdentifier(foo1, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(,)
                  listener: endFormalParameter(null, null, null, foo1, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                parseFormalParameter(,, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar(,)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, ,, false)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, null, 2, false)
                  ensureIdentifier(), formalParameterDeclaration)
                    listener: handleIdentifier(foo2, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, foo2, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(2, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, null, }, Instance of 'VoidType', null, bar, false)
        listener: beginTopLevelMethod(}, null, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(bar, topLevelFunctionDeclaration)
        parseMethodTypeVar(bar)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(bar, bar, false, MemberKind.TopLevelMethod)
          parseFormalParameters(bar, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, [, false)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, null, 2, false)
                  ensureIdentifier(), formalParameterDeclaration)
                    listener: handleIdentifier(foo1, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseParenthesizedExpressionFunctionLiteralOrRecordLiteral(=)
                            parseParenthesizedExpressionOrRecordLiteral(=, null)
                              listener: beginParenthesizedExpressionOrRecordLiteral(()
                              parseExpression(()
                                parsePrecedenceExpression((, 1, true)
                                  parseUnaryExpression((, true)
                                    parsePrimary((, expression)
                                      parseLiteralInt(()
                                        listener: handleLiteralInt(42)
                              parseExpression(,)
                                parsePrecedenceExpression(,, 1, true)
                                  parseUnaryExpression(,, true)
                                    parsePrimary(,, expression)
                                      parseLiteralInt(,)
                                        listener: handleLiteralInt(42)
                              ensureCloseParen(42, ()
                              listener: endRecordLiteral((, 2, null)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ,)
                  listener: endFormalParameter(null, null, null, foo1, (, ), FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                parseFormalParameter(,, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar(,)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, ,, false)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, null, 2, false)
                  ensureIdentifier(), formalParameterDeclaration)
                    listener: handleIdentifier(foo2, formalParameterDeclaration)
                  listener: beginFormalParameterDefaultValueExpression()
                  parseExpression(=)
                    parsePrecedenceExpression(=, 1, true)
                      parseUnaryExpression(=, true)
                        parsePrimary(=, expression)
                          parseParenthesizedExpressionFunctionLiteralOrRecordLiteral(=)
                            parseParenthesizedExpressionOrRecordLiteral(=, null)
                              listener: beginParenthesizedExpressionOrRecordLiteral(()
                              parseExpression(()
                                parsePrecedenceExpression((, 1, true)
                                  parseUnaryExpression((, true)
                                    parsePrimary((, expression)
                                      parseLiteralInt(()
                                        listener: handleLiteralInt(42)
                              parseExpression(,)
                                parsePrecedenceExpression(,, 1, true)
                                  parseUnaryExpression(,, true)
                                    parsePrimary(,, expression)
                                      parseLiteralInt(,)
                                        listener: handleLiteralInt(42)
                              ensureCloseParen(42, ()
                              listener: endRecordLiteral((, 2, null)
                  listener: endFormalParameterDefaultValueExpression()
                  listener: handleValuedFormalParameter(=, ])
                  listener: endFormalParameter(null, null, null, foo2, (, ), FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(2, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration(void)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(void)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(})
      listener: beginTopLevelMember(void)
      parseTopLevelMethod(}, null, null, }, Instance of 'VoidType', null, baz, false)
        listener: beginTopLevelMethod(}, null, null)
        listener: handleVoidKeyword(void)
        ensureIdentifierPotentiallyRecovered(void, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(baz, topLevelFunctionDeclaration)
        parseMethodTypeVar(baz)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(baz, baz, false, MemberKind.TopLevelMethod)
          parseFormalParameters(baz, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseOptionalPositionalParameters((, MemberKind.TopLevelMethod)
                listener: beginOptionalFormalParameters([)
                parseFormalParameter([, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar([)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, [, true)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, ?, 2, false)
                  ensureIdentifier(?, formalParameterDeclaration)
                    listener: handleIdentifier(foo1, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(,)
                  listener: endFormalParameter(null, null, null, foo1, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                parseFormalParameter(,, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                  parseMetadataStar(,)
                    listener: beginMetadataStar(()
                    listener: endMetadataStar(0)
                  listener: beginFormalParameter((, MemberKind.TopLevelMethod, null, null, null)
                  parseRecordType((, ,, true)
                    listener: beginRecordType(()
                    parseRecordTypeField((, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(()
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments(,)
                      listener: handleType(int, null)
                      listener: handleNoName(,)
                      listener: endRecordTypeEntry()
                    parseRecordTypeField(,, identifierIsOptional: true)
                      listener: beginRecordTypeEntry()
                      parseMetadataStar(,)
                        listener: beginMetadataStar(int)
                        listener: endMetadataStar(0)
                      listener: handleIdentifier(int, typeReference)
                      listener: handleNoTypeArguments())
                      listener: handleType(int, null)
                      listener: handleNoName())
                      listener: endRecordTypeEntry()
                    listener: endRecordType((, ?, 2, false)
                  ensureIdentifier(?, formalParameterDeclaration)
                    listener: handleIdentifier(foo2, formalParameterDeclaration)
                  listener: handleFormalParameterWithoutValue(])
                  listener: endFormalParameter(null, null, null, foo2, null, null, FormalParameterKind.optionalPositional, MemberKind.TopLevelMethod)
                listener: endOptionalFormalParameters(2, [, ])
              ensureCloseParen(], ()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(0, {, })
        listener: endTopLevelMethod(void, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(void)
  listener: endCompilationUnit(3, )