title: GWT: Menus in UiBinder
body: <p>I would like to implement menus (<code>MenuBar</code>, <code>MenuItem</code>) using the declarative approach via UiBinder in GWT 2.0.</p>
  
  <p>I have run into two problems:</p>
  
  <ol>
  <li><p>Is there a way to add MenuItemSeparators in the .ui.xml file? So
  far, I have only managed to put MenuBar- and MenuItem-tags into the
  file.</p></li>
  <li><p>Using <code>@UiHandler</code>, GWT writes the boilerplate code for event
  handlers for me. For menus, I need to write commands. How am I
  supposed to do this  using the UiBinder approach? Is there a command
  tag to put in the <code>.ui.xml</code> file? Do I have to write the boilerplate
  code for the command handlers myself?</p></li>
  </ol>
  
  <p>Thanks for thinking about these questions!</p>