List<EventID> getDispatchedEvents(List<EventID> eventIds) {
    List<EventID> dispatchedEvents = new LinkedList<>();
    for (EventID eventId : eventIds) {
      if (isDispatched(eventId)) {
        dispatchedEvents.add(eventId);
      }
    }
    return dispatchedEvents;
  }
expiry time for ThreadIdentifiers. In seconds.
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java