code: public static <T> MemcachedClientBuilder<T> newMessagePackClient(final MessagePack messagePack, final Class<T> valueType) {
      if (!ClassUtils.isPrimitiveOrWrapper(valueType)) {
        messagePack.register(valueType);
      }
      return newClient(new MessagePackTranscoder<>(messagePack, valueType));
    }
docs: Create a client builder for MessagePack values.
  @return The builder