@Override
  @Deprecated
  @SuppressWarnings("deprecation")
  public void insertItemAt(JdkComboBoxItem item, int index) {
    super.insertItemAt(item, index);
    processFirstItem(item);
  }
@Override
  @Deprecated
  @SuppressWarnings("deprecation")
  public void insertItemAt(JdkComboBoxItem item, int index)