public KnownVersion getClientVersion() {
    return Versioning.getKnownVersionOrDefault(
        ((InternalDistributedMember) getDistributedMember()).getVersion(),
        KnownVersion.CURRENT);
  }
returns a string representation of this identifier, ignoring the toString cache
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ClientProxyMembershipID.java