public LevelPasswordMdoCallback() {
   this.logger =
       LoggerServiceImpl.getInstance().getLogger(LevelPasswordMdoCallback.class.getName());
 }
 private static class LazyHolder {
   private static IManagerAssembler instance =
       new DefaultTableTypesAssembler(
           LoggerServiceImpl.getInstance().getLogger(DefaultTableTypesAssembler.class.getName()));
 }