/// <summary>
/// Helper used in Startup class to retrieve a token from an authorization code.
/// </summary>
/// <param name="authorizationCode">An authorization code received from an openid connect auth flow.</param>
/// <returns></returns>
public async Task <AuthenticationResult> GetAccessTokenByAuthorizationCode(string authorizationCode)
{
return(await ClientApplication.AcquireTokenByAuthorizationCode(Scopes, authorizationCode).ExecuteAsync());
}
