form.setFields(principalItem, realmItem, includeExcludeItem, rolesItem);
VerticalPanel layout = new VerticalPanel();
layout.setStyleName("window-content");
layout.add(form.asWidget());
rolesItem.update(roles);
DialogueOptions options = new DialogueOptions(
new ClickHandler() {
@Override
public void onClick(ClickEvent event) {