Notification::getNeuturalMessage

private function getNeuturalMessage(string $messageKey, string $lang): string
{
	$message = Loc::getMessage($messageKey . '_N', null, $lang);
	if((string)$message === '') // no neutral message? fall back to Male gender
	{
		$message = Loc::getMessage($messageKey . '_M', null, $lang);
	}

	return (string)$message;
}