* responses without calling MWSCartService service.
 *
 * Responses are loaded from local XML files. You can tweak XML files to
 * experiment with various outputs during development
 *
 * XML files available under MWSCartService/Mock tree
 *
 ***********************************************************************/
// $service = new MWSCartService_Mock();
/************************************************************************
 * Setup request parameters and uncomment invoke to try out
 * sample for Get Carts Action
 ***********************************************************************/
// @TODO: set request. Action can be passed as Cart_Model_GetCarts
$request = new Cart_Model_GetCartsRequest();
$request->setSellerId(MERCHANT_ID);
// object or array of parameters
invokeGetCarts($service, $request);
/**
 * Get Get Carts Action Sample
 * Gets competitive pricing and related information for a product identified by
 * the MarketplaceId and ASIN.
 *
 * @param MWSCartService_Interface $service instance of MWSCartService_Interface
 * @param mixed $request Cart_Model_GetCarts or array of parameters
 */
function invokeGetCarts(MWSCartService_Interface $service, $request)
{
    try {
        $response = $service->GetCarts($request);
        echo "Service Response\n";