@Override
    protected void configurePopup() {
      super.configurePopup();
      Border border = UIManager.getBorder("ComboPopup.border");
      setBorder(border != null ? border :
                SystemInfo.isMac ? JBUI.Borders.empty() :
                IdeBorderFactory.createBorder());
      putClientProperty("JComboBox.isCellEditor", DarculaUIUtil.isTableCellEditor(comboBox));
    }
@Override
    protected void configurePopup()