/// <summary>
        /// List the test users
        /// </summary>
        /// <param name="returnUrl">The return url to redirect user after login</param>
        /// <returns>The view presenting a list of test users</returns>
        public IActionResult Users(string returnUrl)
        {
            List <Testdata> testdata = _testdata.GetTestUsers();

            ViewBag.ReturnUrl = returnUrl;
            return(View(testdata));
        }
        /// <summary>
        /// List the test users
        /// </summary>
        /// <param name="org">Unique identifier of the organisation responsible for the app.</param>
        /// <param name="app">Application identifier which is unique within an organisation.</param>
        /// <returns>The view presenting a list of test users</returns>
        public IActionResult Users(string org, string app)
        {
            List <Testdata> testdata = _testdata.GetTestUsers();

            ViewBag.Org     = org;
            ViewBag.Service = app;
            return(View(testdata));
        }