anchor.diff:      return unit;
     }
   
  -  bool _refresh2() {
  +  bool _refresh2({bool allowCached: false}) {
       var timerWasRunning = timerFileStateRefresh.isRunning;
       if (!timerWasRunning) {
         timerFileStateRefresh.start();
  
positive.code:     _invalidateCurrentUnresolvedData();
  
      {
        var rawFileState = _fsState._fileContentCache.get(path, false);
        _content = rawFileState.content;
        _exists = rawFileState.exists;
        _contentHash = rawFileState.contentHash;
  
negative.code:     counterFileStateRefresh++;
  
      if (_fsState.useSummary2) {
        return _refresh2(allowCached: allowCached);
      }
  
      var timerWasRunning = timerFileStateRefresh.isRunning;
  