public function listRecommendations($request)
    {
        if (!($request instanceof MWSRecommendationsSectionService_Model_ListRecommendationsRequest)) {
            require_once (dirname(__FILE__) . '/Model/ListRecommendationsRequest.php');
            $request = new MWSRecommendationsSectionService_Model_ListRecommendationsRequest($request);
        }
        $parameters = $request->toQueryParameterArray();
        $parameters['Action'] = 'ListRecommendations';
        $httpResponse = $this->_invoke($parameters);

        require_once (dirname(__FILE__) . '/Model/ListRecommendationsResponse.php');
        $response = MWSRecommendationsSectionService_Model_ListRecommendationsResponse::fromXML($httpResponse['ResponseBody']);
        $response->setResponseHeaderMetadata($httpResponse['ResponseHeaderMetadata']);
        return $response;
    }