@Override
 public void validateModifiedFilter(
     SecurityNamedServiceConfig config, SecurityNamedServiceConfig oldConfig)
     throws SecurityConfigException {
   super.validateModifiedFilter(config, oldConfig);
   validateFilterConfig(config);
 }
 @Override
 public void validateRemoveFilter(SecurityNamedServiceConfig config)
     throws SecurityConfigException {
   super.validateRemoveFilter(config);
 }