ShoppingCart_Controller::add_item_link PHP Method

    public static function add_item_link(Buyable $buyable, $parameters = array())
    {
        return self::build_url("add", $buyable, $parameters);
    }

 /**
  * Link to add this product to cart.
  * @return string link
  */
 public function addLink()
 {
     return ShoppingCart_Controller::add_item_link($this);
 }