private static string GetIdentityToken()
        {
            "Requesting token".ConsoleYellow();

            var client = new OAuth2Client(_oauth2Address);
            var response = client.RequestAccessTokenUserName("bob", "abc!123", Constants.Realm);

            return response.AccessToken;
        }
        private static string GetServiceTokenOAuth2(string samlToken)
        {
            "Requesting service token".ConsoleYellow();

            var client = new OAuth2Client(_acsOAuth2Endpoint);
            return client.RequestAccessTokenAssertion(
                samlToken, 
                Microsoft.IdentityModel.Tokens.SecurityTokenTypes.Saml2TokenProfile11, 
                Constants.Realm).AccessToken;
        }