@Override
  protected void initMessage(CacheOperationMessage msg, DirectReplyProcessor p) {
    super.initMessage(msg, p);
    UpdateEntryVersionMessage imsg = (UpdateEntryVersionMessage) msg;
    EntryEventImpl eei = getEvent();
    imsg.key = eei.getKey();
    imsg.eventId = eei.getEventId();
    imsg.versionTag = eei.getVersionTag();
  }
This operation updates Version stamp of an entry if entry is available and entry version stamp
has same DSID as in event's version tag.
geode-core/src/main/java/org/apache/geode/internal/cache/UpdateEntryVersionOperation.java