@Override
  protected EventID distributeTombstoneGC(Set<Object> keysRemoved) {
    EventID eventId = super.distributeTombstoneGC(keysRemoved);
    if (keysRemoved != null && keysRemoved.size() > 0 && getFilterProfile() != null) {
      // send the GC to members that don't have the bucket but have the PR so they
      // can forward the event to clients
      PRTombstoneMessage.send(this, keysRemoved, eventId);
    }
    return eventId;
  }
the partitioned region to which this bucket belongs
geode-core/src/main/java/org/apache/geode/internal/cache/BucketRegion.java