code: function(code, data, rawBody) {
          this.response = {
              response: {
                  statusCode: code,
                  headers: {
                      'content-type': 'application/json',
                  },
              },
              body: data || "",
              err: null,
              rawBody: rawBody || false,
          };
      }
docs: Respond with the given data when this request is satisfied.
  @param {Number} code The HTTP status code.
  @param {Object|Function?} data The response body object. If this is a function,
  it will be invoked when the response body is required (which should be returned).
  @param {Boolean} rawBody true if the response should be returned directly rather
  than json-stringifying it first.