return context.addStyle(nm, parent);
Style newStyle = context.addStyle(nm, parent);   if (styleChangeListener == null) styleChangeListener = new StyleChangeListener(); newStyle.addChangeListener(styleChangeListener);  return newStyle;
  public Style addStyle(String nm, Style parent)  {    StyleContext context = (StyleContext) getAttributeContext();    return context.addStyle(nm, parent);  }