public function updateEvent(Event $event, Reservation $reservation)
 {
     $event->setStart($reservation->getStartInTimestamp());
     $event->setEnd($reservation->getEndInTimestamp());
     $event->setTitle($this->translator->trans('reservation', [], 'reservation') . ' - ' . $reservation->getResource()->getName());
     $event->setIsEditable(false);
     return $event;
 }