});
tb.addButton(create);
ToolbarButton delete = new ToolbarButton(constants.DeleteSelectedUser());
delete.addListener(new ButtonListenerAdapter() {
public void onClick(Button button, EventObject e) {
final String userName = grid.getSelectionModel().getSelected().getAsString("userName"); //NON-NLS
if (userName != null && Window.confirm(Format.format(constants.AreYouSureYouWantToDeleteUser0(), userName))) {
RepositoryServiceFactory.getService().deleteUser(userName, new GenericCallback() {
public void onSuccess(Object a) {