code: func newFsResourceAnalyzer(statsProvider Provider, calcVolumePeriod time.Duration) *fsResourceAnalyzer {
  	r := &fsResourceAnalyzer{
  		statsProvider: statsProvider,
  		calcPeriod:    calcVolumePeriod,
  	}
  	r.cachedVolumeStats.Store(make(statCache))
  	return r
  }
docs: // newFsResourceAnalyzer returns a new fsResourceAnalyzer implementation