}

    public void test_isChangedClusterState() {
        systemHelper.isChangedClusterState(0);
        assertFalse(systemHelper.isChangedClusterState(0));
        assertTrue(systemHelper.isChangedClusterState(1));
        assertTrue(systemHelper.isChangedClusterState(2));
        assertFalse(systemHelper.isChangedClusterState(2));
    }

    public void test_getRedirectResponseToLogin() {

    }

    public void addUpdateConfigListener(final String name, final Supplier<String> listener) {
        updateConfigListenerMap.put(name, listener);
    }

    public boolean isChangedClusterState(final int status) {
        return previousClusterState.getAndSet(status) != status;
    }

    public ActionValidator<FessMessages> createValidator(final RequestManager requestManager,