private List<LoadBalancerId> findLoadBalancers(TenantName tenant, ApplicationName application) {
        return db.readLoadBalancerIds().stream()
                 .filter(id -> id.application().tenant().equals(tenant) &&
                               id.application().application().equals(application))
                 .toList();
    }
Find all load balancer IDs owned by given tenant and application
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/provisioning/LoadBalancerProvisioner.java