public function handleReservationRejected(ReservationRejected $event, State $state)
 {
     // the seat reservation for the given order is has been rejected, reject the order as well
     $command = new RejectOrder($state->get('orderId'));
     $this->commandBus->dispatch($command);
     // the saga ends here
     $state->setDone();
     return $state;
 }