Showing conference call remote video if participant enable video

Hai,

I would like show onference call remote video if participant enable video.

Currently iam using the below code :

When participant enable video the following notification is calling

   @objc func conferencesManagerDidAddPublisher(notification: Notification) {

        if let conference = ((notification.object as? AnyObject)?.value(forKey: kConferenceKey) as? Conference) {

            if let conferencePublisher = ((notification.object as? AnyObject)?.value(forKey: kConferencePublisherKey) as? ConferencePublisher){

            }

        }

My Questions is how to get RTCCall object from the above notification object. Please help me out.

Thank you.