@Override
  public void markAsDestroyed(Object key) {
    synchronized (LOCK) {
      cqResultKeys.put(key, Token.DESTROYED);

      if (!isInitialized()) {
        destroysWhileCqResultsInProgress.add(key);
      }
    }
  }
Marks the key as destroyed in the CQ Results key cache.
geode-cq/src/main/java/org/apache/geode/cache/query/cq/internal/ServerCQResultsCacheReplicateRegionImpl.java