ImportService::hasRealMessages

private function hasRealMessages(array $chat): bool
{
	if ((int)$chat['MESSAGE_COUNT'] === 0)
	{
		return false;
	}

	if ((int)$chat['MESSAGE_COUNT'] === 1)
	{
		return CIMMessageParam::Get((int)$chat['LAST_MESSAGE_ID'], 'USER_JOIN') !== null;
	}

	return true;
}