if testServiceResolver != nil {
		return testServiceResolver
	}

	var serviceResolver webhook.ServiceResolver
	if enabledAggregatorRouting {
		serviceResolver = aggregatorapiserver.NewEndpointServiceResolver(
			informer.Core().V1().Services().Lister(),
			informer.Core().V1().Endpoints().Lister(),
		)
	} else {
		serviceResolver = aggregatorapiserver.NewClusterIPServiceResolver(