private void RemoveParticipantVideo(VideoTrack videoTrack)
{
videoTrack.RemoveRenderer(primaryVideoView);
}
/*
* Set primary view as renderer for participant video track
*/
private void AddParticipantVideo(VideoTrack videoTrack)
{
MoveLocalVideoToThumbnailView();
primaryVideoView.SetMirror(false);
videoTrack.AddRenderer(primaryVideoView);
}