/** {@inheritDoc} */
 @Override
 public ServerModelManagementSocketRemove getCompensatingUpdate(final ServerModel original) {
   if (original.getManagementElement() != null) return null;
   return new ServerModelManagementSocketRemove();
 }
 /** {@inheritDoc} */
 @Override
 protected void applyUpdate(final ServerModel element) throws UpdateFailedException {
   if (!element.addManagementElement(interfaceName, port)) {
     throw new UpdateFailedException("Management socket already configured");
   }
 }