code: public boolean removeMessageListener(String consumerGroupId, String topic,
              IKafkaMessageListener messageListener) {
          KafkaMsgConsumer kafkaConsumer = cacheConsumers.get(consumerGroupId);
          return kafkaConsumer != null ? kafkaConsumer.removeMessageListener(topic, messageListener)
                  : false;
      }
docs: Removes a topic message listener.
  
  @param consumerGroupId
  @param topic
  @param messageListener
  @return {@code true} if successful, {@code false} otherwise (the topic
  may have no such listener added before)