private function assertOrderShippedEventIsDispatched(Order $order, Shipment $shipment)
 {
     /** @var OrderShippedEvent $event */
     $event = $this->fakeEventDispatcher->getDispatchedEvents(OrderShippedEvent::class)[0];
     $this->assertTrue($event instanceof OrderShippedEvent);
     $this->assertEquals($order->getId(), $event->getOrderId());
     $this->assertSame($shipment->getId(), $event->getShipmentId());
 }