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