Eccube\Service\ShoppingService::getNewShipmentItem PHP Method

    public function getNewShipmentItem(Order $Order, Product $Product, ProductClass $ProductClass, $quantity)
    {
        $ShipmentItem = new ShipmentItem();
        $shippings = $Order->getShippings();
        // 選択された商品がどのお届け先情報と関連するかチェック
        $Shipping = null;
        foreach ($shippings as $s) {
            if ($s->getDelivery()->getProductType()->getId() == $ProductClass->getProductType()->getId()) {
                // 商品種別が同一のお届け先情報と関連させる
                $Shipping = $s;
                break;
            }
        }
        if (is_null($Shipping)) {
            // お届け先情報と関連していない場合、エラー
            throw new CartException('shopping.delivery.not.producttype');
        }
        // 商品ごとの配送料合計
        $productDeliveryFeeTotal = 0;
        if (!is_null($this->BaseInfo->getOptionProductDeliveryFee())) {
            $productDeliveryFeeTotal = $ProductClass->getDeliveryFee() * $quantity;
        }
        $Shipping->setShippingDeliveryFee($Shipping->getShippingDeliveryFee() + $productDeliveryFeeTotal);
        $ShipmentItem->setShipping($Shipping)->setOrder($Order)->setProductClass($ProductClass)->setProduct($Product)->setProductName($Product->getName())->setProductCode($ProductClass->getCode())->setPrice($ProductClass->getPrice02())->setQuantity($quantity);
        $ClassCategory1 = $ProductClass->getClassCategory1();
        if (!is_null($ClassCategory1)) {
            $ShipmentItem->setClasscategoryName1($ClassCategory1->getName());
            $ShipmentItem->setClassName1($ClassCategory1->getClassName()->getName());
        }
        $ClassCategory2 = $ProductClass->getClassCategory2();
        if (!is_null($ClassCategory2)) {
            $ShipmentItem->setClasscategoryName2($ClassCategory2->getName());
            $ShipmentItem->setClassName2($ClassCategory2->getClassName()->getName());
        }
        $Shipping->addShipmentItem($ShipmentItem);
        $this->em->persist($ShipmentItem);
        return $ShipmentItem;
    }