public ReliableTopicConfig addMessageListenerConfig(ListenerConfig listenerConfig) {
        checkNotNull(listenerConfig, "listenerConfig can't be null");
        listenerConfigs.add(listenerConfig);
        return this;
    }
@Test
    public void addMessageListenerConfig() {
        ReliableTopicConfig config = new ReliableTopicConfig("foo");

        ListenerConfig listenerConfig = new ListenerConfig("foobar");
        config.addMessageListenerConfig(listenerConfig);

        assertEquals(List.of(listenerConfig), config.getMessageListenerConfigs());
    }