@EventListener
        public void handleKafkaMessageReceivedEvent(final QueueableTicketRegistryMessageReceivedEvent event) {
            latch.countDown();
        }
This is {@link KafkaTicketRegistryTests}.

@author Misagh Moayyed
@since 5.2.0
support/cas-server-support-kafka-ticket-registry/src/test/java/org/apereo/cas/ticket/registry/KafkaTicketRegistryTests.java