anchor.diff:     */
     List<Location> getRelationships(Element element, Relationship relationship) {
       // prepare key
  -    RelationKeyData key =
  -        new RelationKeyData.forObject(
  -            _elementCodec,
  -            _relationshipCodec,
  -            element,
  -            relationship);
  +    RelationKeyData key = new RelationKeyData.forObject(
  +        _elementCodec,
  +        _relationshipCodec,
  +        element,
  +        relationship);
       // find LocationData(s)
       List<LocationData> locationDatas = _relations[key];
       if (locationDatas == null) {
  
positive.code:   }
  
    @override
    String get statistics =>
        '[${_nodeManager.locationCount} locations, ${_sources.length} sources, ${_nameToNodeNames.length} names]';
  
    @override
    bool aboutToIndexDart(AnalysisContext context,
  
negative.code:       }
      }
    }
  
    List<Location> _getRelationshipsUniverse(Relationship relationship) {
      List<Location> locations = <Location>[];
  