private function materializeStub(PhabricatorCalendarEvent $event)
{
if (!$event->getIsStub()) {
throw new Exception(pht('Can not materialize an event stub: this event is not a stub.'));
}
$actor = $this->getActor();
$event->copyFromParent($actor);
$event->setIsStub(0);
$invitees = $event->getParentEvent()->getInvitees();
$new_invitees = array();
foreach ($invitees as $invitee) {
$invitee = id(new PhabricatorCalendarEventInvitee())->setEventPHID($event->getPHID())->setInviteePHID($invitee->getInviteePHID())->setInviterPHID($invitee->getInviterPHID())->setStatus($invitee->getStatus())->save();
$new_invitees[] = $invitee;
}
$event->save();
$event->attachInvitees($new_invitees);
}
