public Collection<CacheClientProxy> getClientProxies() {
    return Collections.unmodifiableCollection(_clientProxies.values());
  }
Returns an unmodifiable Collection of known {@code CacheClientProxy} instances. The
collection is not static so its contents may change.

@return the collection of known {@code CacheClientProxy} instances
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientNotifier.java