private function remove_room_type($id, $confirmed = 0)
 {
     if ($confirmed) {
         $res = wpl_room_types::remove_room_type($id);
     } else {
         $res = false;
     }
     $res = (int) $res;
     $message = $res ? __('Room type removed from WPL successfully.', WPL_TEXTDOMAIN) : __('Error Occured.', WPL_TEXTDOMAIN);
     $data = NULL;
     $response = array('success' => $res, 'message' => $message, 'data' => $data);
     echo json_encode($response);
     exit;
 }