public IRTCRtpSender[] GetSenders() =>
 ((Webrtc.PeerConnection)NativeObject).Senders
 .Select(nativeSender => RTCRtpSender.Create(nativeSender)).ToArray();
 public IRTCRtpSender AddTrack(IMediaStreamTrack track, IMediaStream stream) =>
 RTCRtpSender.Create(((Webrtc.PeerConnection)NativeObject).AddTrack(
                         track.NativeObject as Webrtc.MediaStreamTrack, new List <string> {
     stream.Id
 }));