anchor.diff:  
     @override
     @failingTest
  -  void test_parsePrimaryExpression_mapLiteral() {
  -    super.test_parsePrimaryExpression_mapLiteral();
  -  }
  -
  -  @override
  -  @failingTest
     void test_parsePrimaryExpression_mapLiteral_typed_genericComment() {
       super.test_parsePrimaryExpression_mapLiteral_typed_genericComment();
  +  }
  +
  +  @override
  +  @failingTest
  +  void test_parsePrimaryExpression_super() {
  +    super.test_parsePrimaryExpression_super();
     }
   
     @override
  
positive.code:       sc += typeArgumentsCode;
      }
      sc += code;
      return _parseMapLiteralCode(sc);
    }
  
    @override
    MapLiteralEntry parseMapLiteralEntry(String code) {
      return _parseMapLiteralCode('{$code}').entries.single;
    }
  
    @override
  
negative.code:   @override
    TypedLiteral parseListOrMapLiteral(analyzer.Token modifier, String code) {
      String literalCode = modifier != null ? '$modifier $code' : code;
      return parsePrimaryExpression(literalCode) as TypedLiteral;
    }
  
    @override
  