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khosb/modules/cart/classes/Cartable.php

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<?php defined('SYSPATH') or die('No direct access allowed.');
/**
* This interface ensures that all cart processing objects have the right methods
*
2013-03-19 22:35:19 +00:00
* @package Cart
* @category Interface
* @author Deon George
2013-03-19 22:35:19 +00:00
* @copyright (c) 2009-2013 Open Source Billing
* @license http://dev.osbill.net/license.html
*/
interface Cartable {
// Render a cart line item.
public function cart_item();
// Return if this invoice is already in the cart
public function cart_exists();
}
?>