code: func (plugin *localVolumePlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
  	fs := v1.PersistentVolumeFilesystem
  	localVolume := &v1.PersistentVolume{
  		ObjectMeta: metav1.ObjectMeta{
  			Name: volumeName,
  		},
  		Spec: v1.PersistentVolumeSpec{
  			PersistentVolumeSource: v1.PersistentVolumeSource{
  				Local: &v1.LocalVolumeSource{
  					Path: "",
  				},
  			},
  			VolumeMode: &fs,
  		},
  	}
  	return volume.NewSpecFromPersistentVolume(localVolume, false), nil
  }
docs: // TODO: check if no path and no topology constraints are ok