updateSound method
Update Twilio Device sound defined by SoundName, this will override the default Twilio Javascript sound. If url is null, the default will be used. Documentation: https://www.twilio.com/docs/voice/sdks/javascript/twiliodevice#deviceoptionssounds-properties-and-default-sounds
Implementation
@override
Future<void> updateSound(SoundName soundName, String? url) {
// TODO: implement updateSound
throw UnimplementedError();
}