@Override
  public void setErrorPanelPopupHandler(@NotNull PopupHandler handler) {
    ThreadingAssertions.assertEventDispatchThread();
    MyErrorPanel errorPanel = getErrorPanel();
    if (errorPanel != null) {
      errorPanel.setPopupHandler(handler);
    }
  }
@Override
  public void setErrorPanelPopupHandler(@NotNull PopupHandler handler)