public function getProperties()
{
if ($this->properties === null) {
$this->properties = array('DTSTART' => $this->getStart(), 'DTEND' => $this->getEnd(), 'SUMMARY' => $this->getTitle(), 'DESCRIPTION' => $this->getDescription(), 'LOCATION' => $this->getLocation(), 'STUDIP_CATEGORY' => $this->getStudipCategory(), 'CREATED' => $this->mkdate, 'LAST-MODIFIED' => $this->chdate, 'STUDIP_ID' => $this->termin_id, 'SEM_ID' => $this->range_id, 'SEMNAME' => $this->course->name, 'CLASS' => 'CONFIDENTIAL', 'UID' => CourseEvent::getUid(), 'RRULE' => CourseEvent::getRecurrence(), 'EXDATE' => '', 'EVENT_TYPE' => 'sem', 'STATUS' => 'CONFIRMED', 'DTSTAMP' => time());
}
return $this->properties;
}
