static void Main(string[] args)
    {
        // Find your Account Sid and Auth Token at twilio.com/user/account
        string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
        string AuthToken = "your_auth_token";
        var twilio = new TwilioRestClient(AccountSid, AuthToken);

        var options = new DomainOptions();
        options.FriendlyName = "Little Kevin";
        options.VoiceMethod = "GET";

        twilio.UpdateDomain("SD32a3c49700934481addd5ce1659f04d2", options);
    }