Eccube\Entity\Order::calculateTotalQuantity PHP Метод

    public function calculateTotalQuantity()
    {
        $totalQuantity = 0;
        foreach ($this->getOrderDetails() as $OrderDetail) {
            $totalQuantity += $OrderDetail->getQuantity();
        }
        return $totalQuantity;
    }

 /**
  * 合計数量を取得
  *
  * @param Order $Order
  * @return int
  * @deprecated since 3.0.0, to be removed in 3.1
  */
 public function getTotalQuantity(Order $Order)
 {
     return $Order->calculateTotalQuantity();
 }