if (encoding==null) encoding=URIUtil.__CHARSET;
    public void decodeQueryTo(MultiMap parameters, String encoding)         throws UnsupportedEncodingException    {        if (_query==_fragment)            return;               if (StringUtil.isUTF8(encoding))            UrlEncoded.decodeUtf8To(_raw,_query+1,_fragment-_query-1,parameters);        else            UrlEncoded.decodeTo(StringUtil.toString(_raw,_query+1,_fragment-_query-1,encoding),parameters,encoding);    }