void PresentAuthenticationController()
        {
            var authenticationController = new AuthenticationController()
            {
                Title                = "Sign in",
                Delegate             = this,
                WebViewConfiguration = _webViewConfiguration,
                Url = URL.Append("sign-in", false)
            };

            var authNavigationController = new UINavigationController(authenticationController);

            PresentViewController(authNavigationController, true, null);
        }
 void IAuthenticationControllerDelegate.AuthenticationControllerDidAuthenticate(AuthenticationController authenticationController)
 {
     Session.Reload();
     DismissViewController(true, null);
 }