public function getCategoryModels($categoryId, $params = array())
    {
        $resource = 'popular/' . $categoryId . '.json';
        $resource .= '?' . $this->buildQueryString($params);
        $response = $this->getServiceResponse($resource);

        $getPopularCategoryModelsResponse = new Models\ResponsePopularCategoryModelsGet($response);

        return $getPopularCategoryModelsResponse;
    }