public void startServingGIIRequest() {
    // some of our dunit tests create HARegions in odd ways that cause owningQueue
    // to be null during GII
    if (owningQueue == null) {
      if (logger.isDebugEnabled()) {
        logger.debug(
            "found that owningQueue was null during GII of {} which could lead to event loss (see #41681)",
            this);
      }
      return;
    }
    owningQueue.startGiiQueueing();
  }
invoked when we start providing a GII image
geode-core/src/main/java/org/apache/geode/internal/cache/HARegion.java