docs: @Deprecated
      @SuppressWarnings("deprecation")
      protected void registerAddOperation(final ManagementResourceRegistration registration, final OperationStepHandler handler, OperationEntry.Flag... flags) {
          if (handler instanceof DescriptionProvider) {
              registration.registerOperationHandler(getOperationDefinition(ModelDescriptionConstants.ADD,
                                  (DescriptionProvider) handler, OperationEntry.EntryType.PUBLIC,flags)
                                 , handler);
  
          } else {
              registration.registerOperationHandler(getOperationDefinition(ModelDescriptionConstants.ADD,
                      new DefaultResourceAddDescriptionProvider(registration, descriptionResolver, orderedChild),
                      OperationEntry.EntryType.PUBLIC,
                      flags)
                      , handler);
          }
      }