Constructor where the queryString gets parsed
            into the individual query fields.
            
            The common use for this constructor is to pass in 
            QueryString as is, i.e.
            arguments remain x-www-form-urlencoded, and this constructor
            parses out the arguments it is interested in.
            
| Exception | Condition | 
|---|---|
| UrlENEQueryParseException | 
            If there were any errors in parsing queryString.
             |