func (u NodeId) ArmForSwitch(sw int32) (string, bool) {
	return PublicKey(u).ArmForSwitch(sw)
}
func (u NodeId) ArmForSwitch(sw int32) (string, bool) {
	return PublicKey(u).ArmForSwitch(sw)
}
// ArmForSwitch returns which field name should be used for storing
// the value for an instance of PublicKey