code: function getRolesetInGroupWithJar (jar, group) {
    var httpOpt = {
      url: '//www.roblox.com/My/Groups.aspx?gid=' + group,
      options: {
        jar: jar
      }
    };
    return http(httpOpt)
    .then(function (body) {
      return parseInt(body.match(/InitializeGlobalVars\((.*), /)[1], 10);
    });
  }
docs: Define