public static function execute()
 {
     if (!isset($_GET['search'])) {
         $_GET['search'] = '';
     }
     if (!isset($_GET['page']) || !is_numeric($_GET['page'])) {
         $_GET['page'] = 1;
     }
     if (!empty($_GET['search'])) {
         $result = TaxClasses::find($_GET['search'], $_GET['page']);
     } else {
         $result = TaxClasses::getAll($_GET['page']);
     }
     $result['rpcStatus'] = RPC::STATUS_SUCCESS;
     echo json_encode($result);
 }