@Override
      public void actionPerformed(@NotNull AnActionEvent e) {
        if (e.getInputEvent() instanceof KeyEvent) {
          final int code = ((KeyEvent)e.getInputEvent()).getKeyCode();
          scrollBy(code == KeyEvent.VK_DOWN ? 1 : code == KeyEvent.VK_UP ? -1 : 0, combo);
        }
      }
@Override
      public void actionPerformed(@NotNull AnActionEvent e)