Something

<ui>
  <menubar name="menubar">
    <menu action="menubar:file">
      <menuitem action="file:new"/>
      <menuitem action="file:open"/>
      <menuitem action="file:close"/>
      <separator/>
      <menuitem action="app:exit"/>
   </menu>
    <menu action="menubar:edit">
      <menuitem action="doc:cut"/>
      <menuitem action="doc:copy"/>
      <menuitem action="doc:paste"/>
      <separator/>
      <menuitem action="doc:selectall"/>
    </menu>
  </menubar>
</ui>