Chat::addIndex

protected function addIndex(): self
{
	if (!$this->getChatId())
	{
		return $this;
	}

	$index = BitrixImInternalsChatIndex::create()
		->setChatId($this->getChatId())
		->setTitle(mb_substr($this->getTitle() ?? '', 0, 255))
		->setUserList($this->getUserNamesForIndex())
	;
	BitrixImModelChatTable::addIndexRecord($index);

	return $this;
}