@Override
    public void updateLoadBalancer(KubevirtLoadBalancer lb) {
        checkNotNull(lb, ERR_NULL_LOAD_BALANCER);
        checkArgument(!Strings.isNullOrEmpty(lb.name()), ERR_NULL_LOAD_BALANCER_NAME);

        kubevirtLoadBalancerStore.updateLoadBalancer(lb);
        log.info(String.format(MSG_LOAD_BALANCER, lb.name(), MSG_UPDATED));
    }
@Test(expected = IllegalArgumentException.class)
    public void testUpdateUnregisteredLoadBalancer() {
        target.updateLoadBalancer(LB);
    }