@Override
  public UUID getUUID() {
    if (uuidLSBs == 0 && uuidMSBs == 0) {
      return null;
    }
    return new UUID(uuidMSBs, uuidLSBs);
  }
return the jgroups logical address for this member, if it's been established
geode-membership/src/main/java/org/apache/geode/distributed/internal/membership/gms/GMSMemberData.java