@Override
 protected void onInitialize() {
   super.onInitialize();
   final ProgressBar progressBar = new ProgressBar("progressBar").active(true).striped(true);
   progressBar.setModelObject(100);
   add(progressBar);
   final Label progressStatus = new Label("progressStatus", getModel());
   add(progressStatus);
 }
 /**
  * @param modal
  * @param target
  */
 private void closeDeleteConfirmationModal(final Modal modal, AjaxRequestTarget target) {
   // close
   modal.appendCloseDialogJavaScript(target);
 }