### Question:
KafkaMessageHandlerRegistry implements IKafkaMessageHandlerRegistry<T> { @Override public boolean isEmpty() { return CollectionUtils.isEmpty(kafkaMessageHandlers); }  @PostConstruct @SuppressWarnings("checkstyle:MultipleStringLiterals") void init(); @Override List<IKafkaMessageHandler<T>> getForTopic(String topic); @Override List<IKafkaMessageHandler<T>> getForTopicOrFail(String topic); @Override boolean isEmpty(); @Override List<IKafkaMessageHandler<T>> getKafkaMessageHandlers();  }### Answer:
@Test void successfullyRegistersAutowireHandlers() { assertFalse(kafkaMessageHandlerRegistry.isEmpty()); }