code: protected void createLoginControlDataObject(Root inputRootDataObject, String inputProperty) {
          // use the root DataGraph to create a PropertyControl DataGraph
          List<Control> propertyControls = inputRootDataObject.getControls();
          LoginControl loginCtrl = null;
          if (propertyControls != null) {
              loginCtrl = new LoginControl();
              propertyControls.add(loginCtrl);
          }
          // add the requested property to the return list of properties
          if (loginCtrl != null) {
              loginCtrl.getProperties().add(inputProperty);
          }
      }
docs: f113366