/**
  * Notifies this instance that the <tt>SctpConnection</tt> of/associated with a specific
  * <tt>Endpoint</tt> participating in this <tt>Conference</tt> has changed.
  *
  * @param endpoint the <tt>Endpoint</tt> participating in this <tt>Conference</tt> which has had
  *     its (associated) <tt>SctpConnection</tt> changed
  */
 private void endpointSctpConnectionChanged(
     Endpoint endpoint, SctpConnection oldValue, SctpConnection newValue) {
   // We want to fire initial events (e.g. dominant speaker) over the
   // SctpConnection as soon as it is ready.
   if (oldValue != null) {
     oldValue.removeChannelListener(webRtcDataStreamListener);
   }
   if (newValue != null) {
     newValue.addChannelListener(webRtcDataStreamListener);
     // The SctpConnection may itself be ready already. If this is the
     // case, then it has now become ready for this Conference.
     if (newValue.isReady()) sctpConnectionReady(newValue);
   }
 }