public function listing($page, $limit)
 {
     $response = array('data' => array(), 'paginator' => '');
     if (!empty($limit)) {
         $countries = Country::paginate($limit);
     } else {
         $countries = Country::where('id', '>', '0')->get();
     }
     if (!empty($countries)) {
         foreach ($countries as $key => $country) {
             $response['data'][] = $this->get($country->id, false);
         }
     }
     if (!empty($limit)) {
         $response = Utility::paginator($response, $countries, $limit);
     }
     return $response;
 }