code: public boolean isMatchingTopic(String topic) {
  		if (isFixedTopics()) {
  			return getFixedTopics().contains(topic);
  		} else {
  			return topicPattern.matcher(topic).matches();
  		}
  	}
docs: Check if the input topic matches the topics described by this KafkaTopicDescriptor.
  
  @return true if found a match.