private void createRoleInput(Form<T> form) {
ListMultipleChoice<UserRole> userRoles =
new ListMultipleChoice<UserRole>("user.userRoles", getUserRoles(), new UserRoleRenderer());
userRoles.setMaxRows(4);
userRoles.setLabel(new ResourceModel("admin.user.roles"));
userRoles.setRequired(true);
userRoles.add(new ValidatingFormComponentAjaxBehavior());
form.add(userRoles);
form.add(new AjaxFormComponentFeedbackIndicator("rolesValidationError", userRoles));
}
