/**
  * List Orders
  * ListOrders can be used to find orders that meet the specified criteria.
  *
  * @param mixed $request array of parameters for MarketplaceWebServiceOrders_Model_ListOrders request or MarketplaceWebServiceOrders_Model_ListOrders object itself
  * @see MarketplaceWebServiceOrders_Model_ListOrdersRequest
  * @return MarketplaceWebServiceOrders_Model_ListOrdersResponse
  *
  * @throws MarketplaceWebServiceOrders_Exception
  */
 public function listOrders($request)
 {
     if (!$request instanceof MarketplaceWebServiceOrders_Model_ListOrdersRequest) {
         require_once dirname(__FILE__) . '/Model/ListOrdersRequest.php';
         $request = new MarketplaceWebServiceOrders_Model_ListOrdersRequest($request);
     }
     $parameters = $request->toQueryParameterArray();
     $parameters['Action'] = 'ListOrders';
     $httpResponse = $this->_invoke($parameters);
     require_once dirname(__FILE__) . '/Model/ListOrdersResponse.php';
     $response = MarketplaceWebServiceOrders_Model_ListOrdersResponse::fromXML($httpResponse['ResponseBody']);
     $response->setResponseHeaderMetadata($httpResponse['ResponseHeaderMetadata']);
     return $response;
 }