code: function Response(options) {
        this.getHeader = bind(this.getHeader, this);
        this.isFatalError = bind(this.isFatalError, this);
        this.isError = bind(this.isError, this);
        this.isSuccess = bind(this.isSuccess, this);
        Response.__super__.constructor.call(this, options);
      }
docs: *
  @constructor up.Response
  @internal