code: public ClientConfig setProxyFactoryConfigs(List<ProxyFactoryConfig> proxyFactoryConfigs) {
          Preconditions.isNotNull(proxyFactoryConfigs, "proxyFactoryConfigs");
          this.proxyFactoryConfigs.clear();
          this.proxyFactoryConfigs.addAll(proxyFactoryConfigs);
          return this;
      }
docs: Sets the {@link ProxyFactoryConfig}
  
  @param proxyFactoryConfigs list to assign
  @return configured {@link com.hazelcast.client.config.ClientConfig} for chaining