public void addOrSetClientCqs(ClientProxyMembershipID proxyID, ClientCqConcurrentMap clientCqs) {
    if (_clientCqs == null) {
      _clientCqs = clientCqs;
    } else {
      _clientCqs.put(proxyID, clientCqs.get(proxyID));
    }
  }
Returns the cqs for the given client.
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ClientUpdateMessageImpl.java