Task::getDocumentName

static function getDocumentName($documentId)
{
	$res = CTasks::GetList([], ['ID' => (int) $documentId, 'CHECK_PERMISSIONS' => 'N'], ['TITLE']);
	if ($res && ($task = $res->Fetch()))
	{
		return BitrixMainTextEmoji::decode($task['TITLE']);
	}
	return null;
}