public async Task Can_exchange_authorization_code_for_access_token()
        {
            var authenticationApiClient = new AuthenticationApiClient(new Uri(GetVariable("AUTH0_AUTHENTICATION_API_URL")));

            // Exchange the authorization code
            var token = await authenticationApiClient.ExchangeCodeForAccessToken(new ExchangeCodeRequest
            {
                ClientId = GetVariable("AUTH0_CLIENT_ID"),
                ClientSecret = GetVariable("AUTH0_CLIENT_SECRET"),
                RedirectUri = "http://www.blah.com/test",
                AuthorizationCode = "AaBhdAOl4OKvjX2I"
            });

            // Assert
            token.Should().NotBeNull();
        }