private void DeleteCustomVoiceModel()
{
if (string.IsNullOrEmpty(_customVoiceModelID))
{
throw new ArgumentNullException("customVoiceModelID");
}
Console.WriteLine(string.Format("Calling DeleteCustomVoiceModel({0})...", _customVoiceModelID));
_textToSpeech.DeleteCustomVoiceModel(_customVoiceModelID);
Console.WriteLine(string.Format("Custom voice model {0} deleted.", _customVoiceModelID));
}