public async Task <IActionResult> GetCoreApiData()
        {
            string access_token = await HttpContext.GetTokenAsync("access_token");

            using (HttpClient client = new HttpClient())
            {
                client.SetBearerToken(access_token);
                HttpResponseMessage response = await client.GetAsync("https://localhost:44331/api/hello");

                if (response.IsSuccessStatusCode)
                {
                    string message = await response.Content.ReadAsStringAsync();

                    return(Ok(message));
                }
                else if (response.StatusCode == System.Net.HttpStatusCode.Unauthorized)
                {
                    var tokenResponse = await _identityHelpers.RenewToken();

                    client.SetBearerToken(tokenResponse.AccessToken);
                    response = await client.GetAsync("https://localhost:44331/api/hello");

                    if (response.IsSuccessStatusCode)
                    {
                        string message = await response.Content.ReadAsStringAsync();

                        return(Ok(message));
                    }
                    return(StatusCode(401));
                }
                else
                {
                    return(BadRequest());
                }
            }
        }