private void addJasnyFileUploadDemo() {
Form<Void> jasnyFileUploadForm = new Form<Void>("jasnyFileUploadForm");
add(jasnyFileUploadForm);
jasnyFileUploadForm.setMultiPart(true);
FileUploadField jasnyFileUpload = new FileUploadField("jasnyFileUpload");
jasnyFileUploadForm.add(jasnyFileUpload);
UploadProgressBar progressBar = new UploadProgressBar("progressBar",
jasnyFileUploadForm, jasnyFileUpload, Model.of(0));
progressBar.striped(true).active(true).type(ProgressBar.Type.INFO);