public Identity getIdentity() {
    return new Identity();
  }
Resets the unique id counter. This is done for durable clients that stops/starts its cache.
When it restarts its cache, it needs to maintain the same unique id

@since GemFire 5.5
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ClientProxyMembershipID.java