anchor.diff:    }
   
     /**
  +   * Return the stream that produces [AnalysisStatus] events.
  +   */
  +  Stream<AnalysisStatus> get status => _statusController.stream;
  +
  +  /**
      * Add the file with the given [path] to the set of files to analyze.
      *
      * The [path] must be absolute and normalized.
  
positive.code:   void addFile(String path) {
      _explicitFiles.add(path);
      _filesToAnalyze.add(path);
      _hasWork.notify();
    }
  
  
negative.code:   void set priorityFiles(List<String> priorityPaths) {
      _priorityFiles.clear();
      _priorityFiles.addAll(priorityPaths);
      _transitionToAnalyzing();
      _hasWork.notify();
    }
  
  