setQuantity() public method

public setQuantity ( integer $quantity )
$quantity integer
 /**
  * Updates an existing order's product
  *
  * @param OrderProductInterface $orderProduct
  * @param array                 $productValues
  */
 protected function updateOrderProduct(OrderProductInterface $orderProduct, array $productValues)
 {
     $sellPrice = $orderProduct->getSellPrice();
     $grossAmount = $productValues['gross_amount'];
     $taxRate = $orderProduct->getSellPrice()->getTaxRate();
     $netAmount = TaxHelper::calculateNetPrice($grossAmount, $taxRate);
     $sellPrice->setTaxRate($taxRate);
     $sellPrice->setTaxAmount($grossAmount - $netAmount);
     $sellPrice->setNetAmount($netAmount);
     $sellPrice->setGrossAmount($grossAmount);
     $orderProduct->setWeight($productValues['weight']);
     $orderProduct->setQuantity($productValues['quantity']);
 }