res = append(res, p.ServicesForWaypoint(key)...)
	}
	return res
}

func (c *Controller) WorkloadsForWaypoint(key model.WaypointKey) []model.WorkloadInfo {
	if !features.EnableAmbientWaypoints {
		return nil
	}
	var res []model.WorkloadInfo
	for _, p := range c.GetRegistries() {
		res = append(res, p.WorkloadsForWaypoint(key)...)
	}
	return res
}

	"istio.io/istio/pkg/slices"
	"istio.io/istio/pkg/util/sets"
	"istio.io/istio/pkg/workloadapi"
)

type Index interface {
	Lookup(key string) []model.AddressInfo
	All() []model.AddressInfo
	WorkloadsForWaypoint(key model.WaypointKey) []model.WorkloadInfo
	ServicesForWaypoint(key model.WaypointKey) []model.ServiceInfo
	SyncAll()
	HasSynced() bool
	model.AmbientIndexes
}

var _ Index = &index{}

	return nil
}

func (sd *ServiceDiscovery) Waypoint(string, string) []netip.Addr {
	return nil
}

func (sd *ServiceDiscovery) WorkloadsForWaypoint(model.WaypointKey) []model.WorkloadInfo {
	return nil
}

func (sd *ServiceDiscovery) AddWorkloadInfo(infos ...*model.WorkloadInfo) {
	sd.mutex.Lock()
	defer sd.mutex.Unlock()

		proxy *Proxy,
		allAddresses sets.String,
		currentSubs sets.String,
	) sets.String
	Policies(requested sets.Set[ConfigKey]) []WorkloadAuthorization
	ServicesForWaypoint(WaypointKey) []ServiceInfo
	WorkloadsForWaypoint(WaypointKey) []WorkloadInfo
}

// WaypointKey is a multi-address extension of NetworkAddress which is commonly used for lookups in AmbientIndex