parseUnit(UnmatchedToken(())
  skipErrorTokens(UnmatchedToken(())
  listener: beginCompilationUnit(f)
  syntheticPreviousToken(f)
  parseTopLevelDeclarationImpl(UnmatchedToken((), Instance of 'DirectiveContext')
    parseMetadataStar(UnmatchedToken(())
      listener: beginMetadataStar(f)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl(UnmatchedToken(())
      listener: beginTopLevelMember(f)
      isReservedKeyword(()
      parseTopLevelMethod(UnmatchedToken((), null, UnmatchedToken((), Instance of 'NoType', null, f, false)
        listener: beginTopLevelMethod(UnmatchedToken((), null)
        listener: handleNoType(UnmatchedToken(())
        ensureIdentifierPotentiallyRecovered(UnmatchedToken((), topLevelFunctionDeclaration, false)
          listener: handleIdentifier(f, topLevelFunctionDeclaration)
        parseMethodTypeVar(f)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(f, f, false, MemberKind.TopLevelMethod)
          parseFormalParameters(f, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
                parseMetadataStar(()
                  listener: beginMetadataStar(x)
                  listener: endMetadataStar(0)
                listener: beginFormalParameter(x, MemberKind.TopLevelMethod, null, null, null)
                listener: handleNoType(()
                ensureIdentifier((, formalParameterDeclaration)
                  listener: handleIdentifier(x, formalParameterDeclaration)
                listener: handleFormalParameterWithoutValue(class)
                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
              rewriter()
              listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          ensureBlock(), Instance of 'Template<(Token) => Message>', null)
            reportRecoverableError(class, Message[ExpectedFunctionBody, Expected a function body, but got 'class'., null, {lexeme: class}])
              listener: handleRecoverableError(Message[ExpectedFunctionBody, Expected a function body, but got 'class'., null, {lexeme: class}], class, class)
            insertBlock())
              rewriter()
              rewriter()
          listener: handleInvalidFunctionBody({)
        listener: endTopLevelMethod(f, null, })
  listener: endTopLevelDeclaration(class)
  parseTopLevelDeclarationImpl(}, Instance of 'DirectiveContext')
    parseMetadataStar(})
      listener: beginMetadataStar(class)
      listener: endMetadataStar(0)
    parseTopLevelKeywordDeclaration(}, class, Instance of 'DirectiveContext')
      parseClassDeclarationModifiers(}, class)
      parseClassOrNamedMixinApplication(null, class)
        listener: beginClassOrMixinOrNamedMixinApplicationPrelude(class)
        ensureIdentifier(class, classOrMixinDeclaration)
          listener: handleIdentifier(C, classOrMixinDeclaration)
        listener: handleNoTypeVariables({)
        listener: beginClassDeclaration(class, null, C)
        parseClass(C, class, class, C)
          parseClassHeaderOpt(C, class, class)
            parseClassExtendsOpt(C)
              listener: handleNoType(C)
              listener: handleClassExtends(null, 1)
            parseWithClauseOpt(C)
              listener: handleClassNoWithClause()
            parseClassOrMixinImplementsOpt(C)
              listener: handleClassOrMixinImplements(null, 0)
            listener: handleClassHeader(class, class, null)
          parseClassOrMixinOrExtensionBody(C, DeclarationKind.Class, C)
            listener: beginClassOrMixinOrExtensionBody(DeclarationKind.Class, {)
            notEofOrValue(}, })
            listener: endClassOrMixinOrExtensionBody(DeclarationKind.Class, 0, {, })
          listener: endClassDeclaration(class, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(UnmatchedToken(())
    listener: handleErrorToken(UnmatchedToken(())
    listener: handleRecoverableError(Message[UnmatchedToken, Can't find ')' to match '('., null, {string: ), lexeme: (}], UnmatchedToken((), UnmatchedToken(())
  listener: endCompilationUnit(2, )