@Override
  public InternalDistributedMember readMember(DataInput in)
      throws IOException, ClassNotFoundException {
    return InternalDistributedMember.readEssentialData(in);
  }
The version tag class for version tags for non-persistent regions. The VersionSource held in
these tags is an InternalDistributedMember.
geode-core/src/main/java/org/apache/geode/internal/cache/versions/VMVersionTag.java