Notifier::send

static function send(
	string $messageType,
	int $userId,
	string $title,
	string $body,
	array $payload = []
): void
{
	if (!self::isAvailable())
	{
		return;
	}

	$message = new Message($messageType, $title, $body, $payload);
	Sender::send($userId, $message);
}