Eccube\Entity\OrderDetail::setProduct PHP Méthode

    public function setProduct(\Eccube\Entity\Product $product)
    {
        $this->Product = $product;
        return $this;
    }

 public function setUp()
 {
     parent::setUp();
     $faker = $this->getFaker();
     $this->Member = $this->app['eccube.repository.member']->find(2);
     $this->Customer = $this->createCustomer();
     $this->Order = $this->createOrder($this->Customer);
     $this->Product = $this->createProduct();
     $ProductClasses = $this->Product->getProductClasses();
     $this->ProductClass = $ProductClasses[0];
     $quantity = 3;
     $TaxRule = $this->app['eccube.repository.tax_rule']->getByRule();
     // デフォルト課税規則
     $OrderDetail = new OrderDetail();
     $OrderDetail->setProduct($this->Product)->setProductClass($this->ProductClass)->setProductName($this->Product->getName())->setProductCode($this->ProductClass->getCode())->setPrice($this->ProductClass->getPrice02())->setQuantity($quantity)->setTaxRule($TaxRule->getCalcRule()->getId())->setTaxRate($TaxRule->getTaxRate());
     $this->app['orm.em']->persist($OrderDetail);
     $OrderDetail->setOrder($this->Order);
     $this->Order->addOrderDetail($OrderDetail);
     // 1個ずつ別のお届け先に届ける
     for ($i = 0; $i < $quantity; $i++) {
         $Shipping = new Shipping();
         $Shipping->copyProperties($this->Customer);
         $Shipping->setName01($faker->lastName)->setName02($faker->firstName)->setKana01('セイ');
         $this->Order->addShipping($Shipping);
         $Shipping->setOrder($this->Order);
         $this->app['orm.em']->persist($Shipping);
         $ShipmentItem = new ShipmentItem();
         $ShipmentItem->setShipping($Shipping)->setOrder($this->Order)->setProductClass($this->ProductClass)->setProduct($this->Product)->setProductName($this->Product->getName())->setProductCode($this->ProductClass->getCode())->setPrice($this->ProductClass->getPrice02())->setQuantity(1);
         $this->app['orm.em']->persist($ShipmentItem);
     }
     $subTotal = 0;
     foreach ($this->Order->getOrderDetails() as $OrderDetail) {
         $subTotal += $OrderDetail->getPriceIncTax() * $OrderDetail->getQuantity();
     }
     $this->Order->setSubTotal($subTotal);
     $this->Order->setTotal($subTotal);
     $this->Order->setPaymentTotal($subTotal);
     $this->app['orm.em']->flush();
 }