@Override
  public void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
    member.writeEssentialData(out);

  }
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