@Override
  boolean needsTombstoneGCKeysForClients(EventID eventID, FilterInfo clientRouting) {
    if (eventID == null) {
      return false;
    }
    if (CacheClientNotifier.getInstance() == null) {
      return false;
    }
    if (clientRouting != null) {
      return true;
    }
    return getFilterProfile() != null;
  }
the partitioned region to which this bucket belongs
geode-core/src/main/java/org/apache/geode/internal/cache/BucketRegion.java