docs: public void offerEvent(IPortletWindowId portletWindowId, QueuedEvent event) {
          Queue<QueuedEvent> events = resolvedEventQueues.get(portletWindowId);
          if (events == null) {
              events =
                      ConcurrentMapUtils.putIfAbsent(
                              resolvedEventQueues,
                              portletWindowId,
                              new ConcurrentLinkedQueue<QueuedEvent>());
          }
  
          events.offer(event);
      }