private FeedbackPanel feedback;
public NewQuestionForm(String id) {
super(id);
TextArea<String> questionTextArea = new TextArea<String>("text", textModel);
questionTextArea.add(new QuestionNameValidator(null))
.setRequired(true)
.add(new SimpleAttributeModifier("maxlength", "250"));
add(new FormComponentLabel("questionLabel", questionTextArea));
add(questionTextArea);
add(new AjaxButton("submit") {