<?php
require_once Mage::getModuleDir('controllers', 'Mage_Checkout') . DS . 'CartController.php';

/**
 * Shopping cart controller
 */
class XYZ_Checkout_CartController extends Mage_Checkout_CartController
{
    /**
     * Shopping cart display action
     */
    public function indexAction()
    {
      Mage::log("XYZ_Checkout_CartController");
      //parent::indexAction();
    }
}