anchor.diff:        // firstToken should be set by beginCompilationUnit event.
       }
       _currentFastaToken = parseFunction(_currentFastaToken);
  -    expect(_currentFastaToken.isEof, isTrue);
  +    expect(_currentFastaToken.isEof, isTrue, reason: _currentFastaToken.lexeme);
       if (nodeCount >= 0) {
         expect(_astBuilder.stack, hasLength(nodeCount));
       }
  
positive.code:   @override
    FunctionBody parseFunctionBody(
        bool mayBeEmpty, ParserErrorCode emptyErrorCode, bool inExpression) {
      return _run((parser) => (token) =>
              parser.parseFunctionBody(token, inExpression, mayBeEmpty))
          as FunctionBody;
    }
  
    @override
  
negative.code:     // TODO(brianwilkerson) exception:
      // NoSuchMethodError: Class 'ParserProxy' has no instance method 'parseFinalConstVarOrType'.
      super.test_parseFinalConstVarOrType_void_noIdentifier();
    }
  
    @override
  