public boolean closeClientCq(String durableClientId, String clientCQName) throws CqException {
    CacheClientProxy proxy = getClientProxy(durableClientId);
    // close and drain
    if (proxy != null) {
      return proxy.closeClientCq(clientCQName);
    }
    return false;
  }
Returns (possibly stale) map of queue sizes for all clients notified by this server.

@return map with CacheClientProxy as key, and Integer as a value
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientNotifier.java