anchor.diff:        node._path = _removeSegmentsOfPath(node._path, segmentsToRemove);
       });
     }
  -
  +  
  +  /**
  +   * Find the number of equal segments in a list of segments:
  +   * 
  +   *     List1 = [ "c", "Program Files", "Admin" ]
  +   *     List2 = [ "c", "Users", "Admin", "Test Data" ]
  +   *     List3 = [ "c", "Users", "Admin" ]
  +   * 
  +   * In this example we should return 1 because only 1 segment is equal in all
  +   * lists. We don't count equal segments after the first found of non-equal
  +   * list of segments (so "Admin" will not count here").
  +   */
     int _countEqualSegments(List<List<String>> paths) {
       _log("Running _countEqualSegments(");
       paths.forEach((List<String> x) => _log("     $x"));
  
positive.code:       }
      });
      
      /*
       * Find the number of equal segments in a list of segments:
       * 
       * List1 = [ "c", "Program Files", "Admin" ]
       * List2 = [ "c", "Users", "Admin", "Test Data" ]
       * List3 = [ "c", "Users", "Admin" ]
       * 
       * In this example we should return 1 because only 1 segment is equal in all
       * lists. We don't count equal segments after the first found of non-equal
       * list of segments (so "Admin" will not count here").
       */
      for (int i = 0; i < minSegmentLength; i++) {
        String compareValue = paths[0][i];
        
  
negative.code:     return _treeHashCache;
    }
    
    /**
     * Takes the path from the DartCode object and all dependencies and removes
     * unnecessary parts of the path.  E.g.
     * 
     * * C:\Users\Dart\Code\Program.dart
     * * C:\Users\Dart\Code\Packages\important_lib.dart
     * * C:\Users\Dart\Code\Packages\data\model.dart
     * * C:\Users\Dart\Code\Packages\server\database.dart
     * 
     * This will change the paths into:
     * 
     * \Program.dart
     * \Packages\important_lib.dart
     * \Packages\data\model.dart
     * \Packages\server\database.dart
     * 
     * The purpose is to make the paths independent of the running system.
     */
    void _shortenPaths() {
      _log("Running _shortenPaths()");
      List<DartCodeChild> dependencies = _getTree(this).toList(growable:false);
  