code: func (s *volumeStatCalculator) parsePodVolumeStats(podName string, pvcRef *stats.PVCReference, metric *volume.Metrics, volSpec v1.Volume) stats.VolumeStats {
  	available := uint64(metric.Available.Value())
  	capacity := uint64(metric.Capacity.Value())
  	used := uint64(metric.Used.Value())
  	inodes := uint64(metric.Inodes.Value())
  	inodesFree := uint64(metric.InodesFree.Value())
  	inodesUsed := uint64(metric.InodesUsed.Value())
  
  	return stats.VolumeStats{
  		Name:   podName,
  		PVCRef: pvcRef,
  		FsStats: stats.FsStats{Time: metric.Time, AvailableBytes: &available, CapacityBytes: &capacity,
  			UsedBytes: &used, Inodes: &inodes, InodesFree: &inodesFree, InodesUsed: &inodesUsed},
  	}
  }
docs: // parsePodVolumeStats converts (internal) volume.Metrics to (external) stats.VolumeStats structures