updateSubscription method
Update subscription metadata (e.g., event count).
Implementation
void updateSubscription(String subscriptionId, {int? eventCount}) {
final metadata = _activeSubscriptions[subscriptionId];
if (metadata != null) {
_activeSubscriptions[subscriptionId] = metadata.copyWith(
eventCount: eventCount ?? metadata.eventCount,
lastEventAt: DateTime.now(),
);
}
}