@Override
    public void init(@Nullable ActionToolbar mainToolbar, @Nullable ActionToolbar contentToolbar) {
      JBTabs tabs = getTabs();
      if (tabs instanceof JBTabsEx) {
        ((JBTabsEx)tabs).setHideTopPanel(true);
      }
    }
@Override
    public void init(@Nullable ActionToolbar mainToolbar, @Nullable ActionToolbar contentToolbar)