code: func MountGC(path, uuid string) error {
  	err := common.ChrootPrivateUnmount(path, log, debug)
  	if err != nil {
  		return errwrap.Wrap(fmt.Errorf("error cleaning mounts for pod %s", uuid), err)
  	}
  	return nil
  }
docs: // MountGC removes mounts from pods that couldn't be GCed cleanly.