EntityManageFacility::setRegisterMode

public function setRegisterMode($mode)
{
	$allowModes = [
		self::REGISTER_MODE_DEFAULT,
		self::REGISTER_MODE_ONLY_ADD,
		self::REGISTER_MODE_ONLY_UPDATE,
		self::REGISTER_MODE_ALWAYS_ADD
	];
	if (!in_array($mode, $allowModes))
	{
		throw new ArgumentException("Register mode {$mode} not implemented.");
	}

	$this->registerMode = $mode;
	return $this;
}