int index = this.getIndex(uri, localName);
int index = this.getIndex(qName);
  public void addAttribute(String uri, String localName, String qName,                           String type, String value)  {    if (null == uri)      uri = "";    int index = this.getIndex(uri, localName);    if (index >= 0)      this.setAttribute(index, uri, localName, qName, type, value);    else      super.addAttribute(uri, localName, qName, type, value);  }