onJoinEvent method
Implementation
@override
Future<void> onJoinEvent(List<int> publishersList, List<int> subscribersList,
int? senderId) async {
logTime("onJoinEvent");
joinSenderId = senderId;
joinEventPublishers.addAll(publishersList);
allActivePublishers.addAll(publishersList);
allActiveSubscribers.addAll(subscribersList);
selectJoinStrategy();
notifyJoinedSuccessListeners(publishersList);
}