code: public void addConsumer(Consumer consumer, String queue, int instances) {
          addConsumer(consumer, new ConsumerConfiguration(queue), instances);
      }
docs: <p>Adds a consumer to the container, binds it to the given queue with auto acknowledge disabled.
  Does NOT enable the consumer to consume from the message broker until the container is started.</p>
  
  <p>Registers the same consumer N times at the queue according to the number of specified instances.
  Use this for scaling your consumers locally. Be aware that the consumer implementation must
  be stateless or thread safe.</p>
  
  @param consumer The consumer
  @param queue The queue to bind the consume to
  @param instances the amount of consumer instances