docs: @Override
      public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
  
          nameValidator.validate(operation);
          final String attributeName = operation.require(NAME).asString();
  
          final ModelNode submodel = context.readResource(PathAddress.EMPTY_ADDRESS).getModel();
          final ModelNode currentValue = submodel.get(attributeName).clone();
  
          context.getResult().set(currentValue);
      }