protected Set<InternalDistributedMember> getRecipients() {
    CacheDistributionAdvisor advisor = getRegion().getCacheDistributionAdvisor();
    originalRecipients = advisor.adviseCacheOp();
    return originalRecipients;
  }
perform any operation-specific initialization on the given reply processor
geode-core/src/main/java/org/apache/geode/internal/cache/DistributedCacheOperation.java