How to make an async producer with c++ libkafka?

[Michael Cyrulnik]

Does libkafka (c++) allow one to make an async producer?  If so, how?

Client *client;
client = new Client('127.0.0.1', 9092);
client->sendProduceRequest(new ProduceRequest(correlationId, clientId, 
requiredAcks, timeout, produceTopicArraySize, produceTopicArray, true));

How would I make that non-blocking?

thanks,

Michael