}

    @Test
    public void test_dispatchEvent_eventData() {
        final AtomicReference<String> receivedData = new AtomicReference<>();
        final AtomicReference<String> receivedInstanceId = new AtomicReference<>();
        coordinatorHelper.addEventHandler("config_updated", event -> {
            receivedData.set(event.data);
            receivedInstanceId.set(event.instanceId);
        });