code: @Override
      public Menu getMenu(Control parent) {
          if (menu == null) {
              menu = new Menu(parent);
              fillMenu();
          }
          return menu;
      }
docs: /*
  (non-Javadoc)
  
  @see
  org.eclipse.ui.IWorkbenchWindowPulldownDelegate#getMenu(org.eclipse.swt
  .widgets.Control)