code: public void configure(
  			ConcurrentKafkaListenerContainerFactory<Object, Object> listenerFactory,
  			ConsumerFactory<Object, Object> consumerFactory) {
  		listenerFactory.setConsumerFactory(consumerFactory);
  		configureListenerFactory(listenerFactory);
  		configureContainer(listenerFactory.getContainerProperties());
  	}
docs: Configure the specified Kafka listener container factory. The factory can be
  further tuned and default settings can be overridden.
  @param listenerFactory the {@link ConcurrentKafkaListenerContainerFactory} instance
  to configure
  @param consumerFactory the {@link ConsumerFactory} to use