public FilterRoutingInfo adviseFilterRouting(CacheEvent<?, ?> event,
      Set<InternalDistributedMember> cacheOpRecipients) {
    FilterProfile fp = ((LocalRegion) event.getRegion()).getFilterProfile();
    if (fp != null) {
      return fp.getFilterRoutingInfoPart1(event, profiles, cacheOpRecipients);
    }
    return null;
  }
Provide recipient information for netLoad

@return Set of Serializable members that have a CacheLoader installed; no reference to Set kept
        by advisor so caller is free to modify it
geode-core/src/main/java/org/apache/geode/internal/cache/CacheDistributionAdvisor.java