code: func (v VolumePathHandler) RemoveLoopDevice(device string) error {
  	args := []string{"-d", device}
  	cmd := exec.Command(losetupPath, args...)
  	out, err := cmd.CombinedOutput()
  	if err != nil {
  		if _, err := os.Stat(device); os.IsNotExist(err) {
  			return nil
  		}
  		klog.V(2).Infof("Failed to remove loopback device: %s: %v %s", device, err, out)
  		return err
  	}
  	return nil
  }
docs: // RemoveLoopDevice removes specified loopback device