public static function getRoomGroupById($id)
 {
     if (!empty($id)) {
         $roomGroups = GameRoomGroups::findById(DBUtils::getConnection(), $id);
         if (count($roomGroups) > 0) {
             $roomGroup = $roomGroups[0];
             unset($roomGroups);
             if (!empty($roomGroup)) {
                 $roomGroupId = $roomGroup->roomGroupId;
                 if (!empty($roomGroupId)) {
                     return $roomGroup;
                 }
             }
         }
     }
     return null;
 }