anchor.diff:        int elementId = request.findElementId(element);
         if (elementId != -1) {
           CompilationUnitElement unitElement = result.unitElement;
  -        List<SearchResult> fileResults = request.getRelations(
  -            elementId, relationKind, resultKind, unitElement);
  +        List<SearchResult> fileResults =
  +            request.getRelations(elementId, relationToResultKind, unitElement);
           results.addAll(fileResults);
         }
       }
  
positive.code:       element = (element as Member).baseElement;
      }
      List<SearchResult> results = <SearchResult>[];
      await _addResults(results, element, IndexRelationKind.IS_REFERENCED_BY,
          SearchResultKind.REFERENCE);
      await _addResults(results, element, IndexRelationKind.IS_INVOKED_BY,
          SearchResultKind.INVOCATION);
      return results;
    }
  
    Future<List<SearchResult>> _searchReferences_Getter(
        PropertyAccessorElement getter) async {
      List<SearchResult> results = <SearchResult>[];
      await _addResults(results, getter, IndexRelationKind.IS_REFERENCED_BY,
          SearchResultKind.REFERENCE);
      await _addResults(results, getter, IndexRelationKind.IS_INVOKED_BY,
          SearchResultKind.INVOCATION);
      return results;
    }
  
  
negative.code:     PropertyAccessorElement getter = field.getter;
      PropertyAccessorElement setter = field.setter;
      if (!field.isSynthetic) {
        await _addResults(results, field, {
          IndexRelationKind.IS_WRITTEN_BY: SearchResultKind.WRITE,
          IndexRelationKind.IS_REFERENCED_BY: SearchResultKind.REFERENCE
        });
      }
      if (getter != null) {
        await _addResults(results, getter, {
          IndexRelationKind.IS_REFERENCED_BY: SearchResultKind.READ,
          IndexRelationKind.IS_INVOKED_BY: SearchResultKind.INVOCATION
        });
      }
      if (setter != null) {
        await _addResults(results, setter,
            {IndexRelationKind.IS_REFERENCED_BY: SearchResultKind.WRITE});
      }
      return results;
    }
  