func isNasVolume(t types.HostFileSystemVolumeFileSystemType) bool {
	switch t {
	case types.HostFileSystemVolumeFileSystemTypeNFS, types.HostFileSystemVolumeFileSystemTypeNFS41:
		return true
	}
	return false
}
func isNasVolume(t types.HostFileSystemVolumeFileSystemType) bool {
	switch t {
	case types.HostFileSystemVolumeFileSystemTypeNFS, types.HostFileSystemVolumeFileSystemTypeNFS41:
		return true
	}
	return false
}
// isNasVolume returns true if the HostFileSystemVolumeFileSystemType matches
// one of the possible filesystem types that a NAS datastore supports.