public function toArray($request): array 	{ 		$shippingServiceFactory = new ShippingServiceFactory;  		return [ 			'id' => $this->id, 			'shipment_number' => $this->shipment_number, 			'delivery_service' => $this->delivery_service, 			'tracking_link' => $this->shipment_number ? $shippingServiceFactory->make($this->delivery_service)->createTrackingLink($this->shipment_number) : null, 			'created_at' => formatTimestamp($this->created_at), 			'updated_at' => formatTimestamp($this->updated_at), 		]; 	}