public function updated(OrderShipment $orderShipment): void 	{ 		if ($orderShipment->wasChanged('shipment_number') && $orderShipment->shipment_number) { 			$shippingServiceFactory = new ShippingServiceFactory;  			$order = $orderShipment->order;  			Notification::route('mail', $order->customer_email) 			->notify(new ShippingNumberUpdated($orderShipment->shipment_number, $shippingServiceFactory->make($orderShipment->delivery_service), $order, new OrderLocaleChecker));  			Notification::route('mail', setting('app_email')) 			->notify(new ShippingNumberUpdated($orderShipment->shipment_number, $shippingServiceFactory->make($orderShipment->delivery_service), $order, new OrderLocaleChecker)); 		} 	}