public static void OnPhoneHangout_Event(object sender, TwilioEventArgs args)
 {
     OnPhoneHangout?.Invoke(sender, args);
 }
 public static void OnMute_Event(object sender, TwilioEventArgs args)
 {
     OnMute?.Invoke(sender, args);
 }
 public static void OnPhoneCall_Event(object sender, TwilioEventArgs args)
 {
     OnPhoneCall?.Invoke(sender, args);
 }