@Override
    public boolean noServicesOutsideGroupIsDown() throws HostStateChangeDeniedException {
        return servicesDownAndNotInGroup().size() + missingServices == 0;
    }
@Test
    public void testUnknownServiceStatusInGroup() throws HostStateChangeDeniedException {
        ClusterApi clusterApi = makeClusterApiWithUnknownStatus(ServiceStatus.UNKNOWN, ServiceStatus.UP, ServiceStatus.UP);
        clusterApi.noServicesOutsideGroupIsDown();
    }