magento 批改 paypal order product name

magento 修改 paypal order product name
app/code/core/Mage/Sales/Model/Quote  Item.php

public function setProduct($product)
    {
        if ($this->getQuote()) {
            $product->setStoreId($this->getQuote()->getStoreId());
            $product->setCustomerGroupId($this->getQuote()->getCustomerGroupId());
        }
        $this->setData('product', $product)
            ->setProductId($product->getId())
            ->setProductType($product->getTypeId())
            ->setSku($this->getProduct()->getSku())
            ->setName($product->getName()."|S") // this line
            ->setWeight($this->getProduct()->getWeight())
            ->setTaxClassId($product->getTaxClassId())
            ->setBaseCost($product->getCost())
            ->setIsRecurring($product->getIsRecurring())
        ;

        if ($product->getStockItem()) {
            $this->setIsQtyDecimal($product->getStockItem()->getIsQtyDecimal());
        }

        Mage::dispatchEvent('sales_quote_item_set_product', array(
            'product' => $product,
            'quote_item'=>$this
        ));


//        if ($options = $product->getCustomOptions()) {
//            foreach ($options as $option) {
//                $this->addOption($option);
//            }
//        }
        return $this;
    }