GroupChat::checkAccessWithoutCaching

protected function checkAccessWithoutCaching(int $userId): bool
{
	$options = [
		'SELECT' => ['ID', 'CHAT_ID', 'USER_ID', 'START_ID'],
		'FILTER' => ['USER_ID' => $userId, 'CHAT_ID' => $this->getChatId()],
		'LIMIT' => 1,
	];

	return $this->getRelations($options)->hasUser($userId, $this->getChatId());
}