if (view == null) return null;  return ((PlainView) view).modelToView(position, a, bias).getBounds();
return ((View) view).modelToView(position, a, bias);
    public Shape modelToView(int position, Shape a, Position.Bias bias)      throws BadLocationException    {      if (view == null)	return null;            return ((PlainView) view).modelToView(position, a, bias).getBounds();    }