/**
* @param CalendarEvent $parentEvent
*
* @return array
*/
protected function getChildEmails(CalendarEvent $parentEvent)
{
$emails = [];
/** @var CalendarEvent $notifyEvent */
foreach ($parentEvent->getChildEvents() as $notifyEvent) {
$emails[] = $notifyEvent->getCalendar()->getOwner()->getEmail();
}
return $emails;
}
