@Override
  public JComponent getPreferredFocusedComponent() {
    if (myConfigurable == null) return null; // settings editor is not configured yet
    JComponent preferred = myConfigurable.getPreferredFocusedComponent();
    return preferred == null ? UIUtil.getPreferredFocusedComponent(getContent(myConfigurable)) : preferred;
  }
@Override
  public JComponent getPreferredFocusedComponent()