code: public function getLastUpdatedTimeForRecommendations($request)
      {
          if (!($request instanceof MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendationsRequest)) {
              require_once (dirname(__FILE__) . '/Model/GetLastUpdatedTimeForRecommendationsRequest.php');
              $request = new MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendationsRequest($request);
          }
          $parameters = $request->toQueryParameterArray();
          $parameters['Action'] = 'GetLastUpdatedTimeForRecommendations';
          $httpResponse = $this->_invoke($parameters);
  
          require_once (dirname(__FILE__) . '/Model/GetLastUpdatedTimeForRecommendationsResponse.php');
          $response = MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendationsResponse::fromXML($httpResponse['ResponseBody']);
          $response->setResponseHeaderMetadata($httpResponse['ResponseHeaderMetadata']);
          return $response;
      }
docs: Get Last Updated Time For Recommendations
  Retrieving last updated time for all recommendation categories for the given marketplace and seller.
  If last updated time for a category is null, it indicates no active recommendations for this seller in the given marketplace for this category.
  
  @param mixed $request array of parameters for MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendations request or MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendations object itself
  @see MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendationsRequest
  @return MWSRecommendationsSectionService_Model_GetLastUpdatedTimeForRecommendationsResponse
  
  @throws MWSRecommendationsSectionService_Exception