Unsure how to subscribe to hasAudio property changes

[drewandre]

Hi, we are confused how to subscribe to a stream's hasAudio property changes similar to the provided example for subscribing to videoEnabled/Disabled changes. We see that the session instance has a StreamPropertyChanged event, but we're not sure how to use it with this library: https://tokbox.com/developer/sdks/js/reference/StreamPropertyChangedEvent.html.

[drewandre]

We just found a reference to streamPropertyChanged in this commit: opentok/opentok-react-native@7d02122

Hope it helps someone else!