code: function() {
          return (this.scheme !== null ? this.scheme + "://" : '') +
                 (this.host !== null ? this.host : '' ) +
                 (this.port !== -1   ? ":" + this.port : '' ) +
                 (this.path !== null ? this.path : '' ) +
                 (this.qs   !== null ? "?" + this.qs : '' );
      }
docs: Serialize URI to its string representation.
  @method  toString
  @return {String} an URI as a string.