OutcomingAttachmentManager::prepareCancelAttachment

public function prepareCancelAttachment(): OutcomingAttachmentManager
{
	$event = $this->event;
	$fullDay = $event['DT_SKIP_TIME'] === 'Y';

	$this->attachment = Calendar::getInstance()
		->setMethod(Dictionary::METHODS[$this->method])
		->setEvent(Event::getInstance($event['DAV_XML_ID'])
			->setName($event['NAME'])
			->setAttendees($this->attendees)
			->setStartsAt(Util::getDateObject($event['DATE_FROM'], $fullDay, $event['TZ_FROM']))
			->setEndsAt(Util::getDateObject($event['DATE_TO'], $fullDay, $event['TZ_TO']))
			->setCreatedAt(Util::getDateObject($event['DATE_CREATE'], false, $event['TZ_FROM']))
			->setDtStamp(ICalUtil::getIcalDateTime())
			->setModified(Util::getDateObject($event['TIMESTAMP_X'], false, $event['TZ_FROM']))
			->setWithTimezone(!$fullDay)
			->setWithTime(!$fullDay)
			->setOrganizer($this->attendees[$event['MEETING_HOST']], $this->getReplyAddress())
			->setDescription($event['DESCRIPTION'])
			->setTransparent(Dictionary::TRANSPARENT[$event['ACCESSIBILITY']])
//				->setRRule($event['RRULE'])
			->setLocation($event['TEXT_LOCATION'])
			->setSequence((int)$event['VERSION'] + 1)
			->setStatus(Dictionary::INVITATION_STATUS['cancelled'])
		)
		->get();

	return $this;
}