Can someone Explain this dotnet mvc project code

Questions
1

Here is some code I ended up with trying to get this to work and I started with https://github.com/oktadeveloper/okta-aspnet-mvc-example.git I ended up upgrading the dependencies which required some refactoring. I just want to know how this works basically :slight_smile:

private async Task DoCodeRecievedWork(Microsoft.Owin.Security.Notifications.AuthorizationCodeReceivedNotification notification)
        {
            try
            {
                var tokenResponse = await _tokenClient.RequestAuthorizationCodeTokenAsync(notification.ProtocolMessage.Code, redirectUri);

                if (tokenResponse.IsError)
                {
                    throw new Exception(tokenResponse.Error);
                }

                UserInfoRequest request = new UserInfoRequest();
                request.Address = authority + "/v1/userinfo";
                request.Token = tokenResponse.AccessToken;

                //calling this is magically enough to make it all work *shrug
                var userInfoResponse = await _client.GetUserInfoAsync(request);

                if (userInfoResponse.IsError)
                {
                    throw new Exception("Exception calling GetUserInfoAsync :" + userInfoResponse.Error);
                }

            }
            catch (Exception ex)
            {
                _logger.Error(ex.ToString());
                notification.Response.Redirect("/?oktaerror=True");
            }
        }