@Override
  protected void cleanUpDestroyedTokensAndMarkGIIComplete(
      InitialImageOperation.GIIStatus giiStatus) {
    // Load events from temp queued events
    loadEventsFromTempQueue();

    // Initialize the eventSeqNumQueue
    initializeEventSeqNumQueue();

    // Clean up destroyed tokens
    super.cleanUpDestroyedTokensAndMarkGIIComplete(giiStatus);
  }
A transient deque, but should be treated like as a fifo queue to maintain the eventSeqNum of
the events that are to be sent to remote site. It is cleared when the queue is cleared.
geode-core/src/main/java/org/apache/geode/internal/cache/BucketRegionQueue.java