/**
  * @see
  *     org.eclipse.debug.ui.AbstractDebugView#configureToolBar(org.eclipse.jface.action.IToolBarManager)
  */
 @Override
 protected void configureToolBar(IToolBarManager tbm) {
   super.configureToolBar(tbm);
   tbm.add(new Separator(IDebugUIConstants.EMPTY_REGISTER_GROUP));
   tbm.add(new Separator(IDebugUIConstants.REGISTER_GROUP));
 }