parseUnit(class)
  skipErrorTokens(class)
  listener: beginCompilationUnit(class)
  syntheticPreviousToken(class)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(class)
      listener: endMetadataStar(0)
    parseTopLevelKeywordDeclaration(, class, Instance of 'DirectiveContext')
      parseClassDeclarationModifiers(, class)
      parseClassOrNamedMixinApplication(null, class)
        listener: beginClassOrNamedMixinApplicationPrelude(class)
        ensureIdentifier(class, classOrMixinDeclaration)
          listener: handleIdentifier(A, classOrMixinDeclaration)
        listener: handleNoTypeVariables({)
        listener: beginClassDeclaration(class, null, A)
        parseClass(A, class, class, A)
          parseClassHeaderOpt(A, class, class)
            parseClassExtendsOpt(A)
              listener: handleNoType(A)
              listener: handleClassExtends(null, 1)
            parseWithClauseOpt(A)
              listener: handleClassNoWithClause()
            parseClassOrMixinImplementsOpt(A)
              listener: handleClassOrMixinImplements(null, 0)
            listener: handleClassHeader(class, class, null)
          parseClassOrMixinOrExtensionBody(A, DeclarationKind.Class, A)
            listener: beginClassOrMixinBody(DeclarationKind.Class, {)
            notEofOrValue(}, Stream)
            parseClassOrMixinOrExtensionMemberImpl({, DeclarationKind.Class, A)
              parseMetadataStar({)
                listener: beginMetadataStar(Stream)
                listener: endMetadataStar(0)
              listener: beginMember()
              parseMethod({, null, null, null, null, null, null, {, Instance of 'ComplexTypeInfo', null, x, DeclarationKind.Class, A, false)
                listener: beginMethod(null, null, null, null, null, x)
                ensureIdentifier({, typeReference)
                  listener: handleIdentifier(Stream, typeReference)
                listener: beginTypeArguments(<)
                listener: handleIdentifier(List, typeReference)
                listener: beginTypeArguments(<)
                listener: handleIdentifier(Y, typeReference)
                listener: handleNoTypeArguments(>)
                listener: handleType(Y, null)
                listener: endTypeArguments(1, <, >)
                listener: handleType(List, null)
                listener: endTypeArguments(1, <, >)
                listener: handleType(Stream, null)
                ensureIdentifierPotentiallyRecovered(>, methodDeclaration, false)
                  listener: handleIdentifier(x, methodDeclaration)
                parseQualifiedRestOpt(x, methodDeclarationContinuation)
                parseMethodTypeVar(x)
                  listener: handleNoTypeVariables(()
                parseGetterOrFormalParameters(x, x, false, MemberKind.NonStaticMethod)
                  parseFormalParameters(x, MemberKind.NonStaticMethod)
                    parseFormalParametersRest((, MemberKind.NonStaticMethod)
                      listener: beginFormalParameters((, MemberKind.NonStaticMethod)
                      listener: endFormalParameters(0, (, ), MemberKind.NonStaticMethod)
                parseInitializersOpt())
                  listener: handleNoInitializers()
                parseAsyncModifierOpt())
                  listener: handleAsyncModifier(null, null)
                  inPlainSync()
                inPlainSync()
                parseFunctionBody(), false, true)
                  listener: beginBlockFunctionBody({)
                  notEofOrValue(}, })
                  listener: endBlockFunctionBody(0, {, })
                listener: endClassMethod(null, Stream, (, null, })
              listener: endMember()
            notEofOrValue(}, })
            listener: endClassOrMixinBody(DeclarationKind.Class, 1, {, })
          listener: endClassDeclaration(class, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(class)
  listener: endCompilationUnit(1, )