CDavCalendarHandler::GetCTag

public function GetCTag($siteId, $account, $arPath)
	{
		$calendarId = $this->GetCalendarId($siteId, $account, $arPath);
		if ($calendarId == null)
			return null;

		$label = CEventCalendar::GetCalendarModificationLabel($calendarId);
		$label = MakeTimeStamp($label);

		return 'BX:'.$label;
	}