CDavExchangeCalendar::GetItemHeader

public function GetItemHeader($event): string
	{
		if (!$event['IsAllDayEvent'])
		{
			return '';
		}

		$tz = MsTimezoneConverter::getMsTimezone(Util::getServerTimezoneName());
		if ($tz === null)
		{
			return '';
		}

		$header = '';
		$header .= " rn";
		$header .= "  rn";
		$header .= "  rn";
		$header .= "   rn";
		$header .= "  rn";
		$header .= " rn";

		return $header;
	}