@Override
  public int hashCode() {
    if (inetAddr == null) {
      return udpPort;
    }
    return udpPort + inetAddr.hashCode();
  }
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