code: function() {
          return new ImageUrl({
              transformations: this.transformations.slice(0),
              baseUrl: this.rootUrl,
              user: this.user,
              publicKey: this.publicKey,
              privateKey: this.privateKey,
              imageIdentifier: this.imageIdentifier,
              extension: this.extension,
              queryString: this.queryString,
              path: this.path
          });
      }
docs: Clone this ImageUrl instance
  
  @return {Imbo.ImageUrl}