code: func (md *metricsStatFS) getFsInfo(metrics *Metrics) error {
  	available, capacity, usage, inodes, inodesFree, inodesUsed, err := fs.FsInfo(md.path)
  	if err != nil {
  		return NewFsInfoFailedError(err)
  	}
  	metrics.Available = resource.NewQuantity(available, resource.BinarySI)
  	metrics.Capacity = resource.NewQuantity(capacity, resource.BinarySI)
  	metrics.Used = resource.NewQuantity(usage, resource.BinarySI)
  	metrics.Inodes = resource.NewQuantity(inodes, resource.BinarySI)
  	metrics.InodesFree = resource.NewQuantity(inodesFree, resource.BinarySI)
  	metrics.InodesUsed = resource.NewQuantity(inodesUsed, resource.BinarySI)
  	return nil
  }
docs: // getFsInfo writes metrics.Capacity, metrics.Used and metrics.Available from the filesystem info