@Override
      public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
        XDebugSession session = getSession();
        XSuspendContext context = session == null ? null : session.getSuspendContext();
        if (context != null && !myThreadsCalculated) {
          myBuilder = new ThreadsBuilder();
          context.computeExecutionStacks(myBuilder);
        }
      }
@Override
      public void popupMenuWillBecomeVisible(PopupMenuEvent e)