public CacheClientProxy getClientProxy(String durableClientId) {
    return getClientProxy(durableClientId, false);
  }
Returns the {@code CacheClientProxy} associated to the durableClientId

@return the {@code CacheClientProxy} associated to the durableClientId
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientNotifier.java