@Override
  public void updateAccessoryView(JComponent component) {
    JLabel label = (JLabel)component;
    final char mnemonic = myBookmark.getMnemonic();
    if (mnemonic != 0) {
      label.setText(Bookmark.toString(mnemonic, true));
    }
    else {
      label.setText("");
    }
  }
@Override
  public void updateAccessoryView(JComponent component)