public VersionTag findVersionTagForClientBulkOp(EventID eventId) {
    return getEventTracker().findVersionTagForBulkOp(eventId);
  }
tries to find the version tag for a replayed client event

@return the version tag, if known. Null if not
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java