frontendResourceTypeIdentifier: func(identifier string) (err error) {
            frontend := &lbaasv1.Frontend{Identifier: identifier}
            if err = r.api.Get(ctx, frontend); err == nil && frontend.LoadBalancer.Identifier == r.lb.Identifier {
                r.frontends = append(r.frontends, frontend)
                r.sortObjectIntoStateArray(frontend)