if regionMatch && zoneMatch && subzoneMatch {
		return true
	}
	return false
}

func LbPriority(proxyLocality, endpointsLocality *core.Locality) int {
	if proxyLocality.GetRegion() == endpointsLocality.GetRegion() {
		if proxyLocality.GetZone() == endpointsLocality.GetZone() {
			if proxyLocality.GetSubZone() == endpointsLocality.GetSubZone() {

		proxy.Locality = &core.Locality{
			Region:  proxy.XdsNode.Locality.GetRegion(),
			Zone:    proxy.XdsNode.Locality.GetZone(),
			SubZone: proxy.XdsNode.Locality.GetSubZone(),
		}
	}
	// add topology labels to proxy labels
	proxy.Labels = labelutil.AugmentLabels(
		proxy.Labels,
		proxy.Metadata.ClusterID,
		util.LocalityToString(proxy.Locality),
		proxy.GetNodeName(),

	if x != nil {
		return x.Region
	}
	return ""
}

func (x *Locality) GetZone() string {
	if x != nil {
		return x.Zone
	}
	return ""
}

func (x *Locality) GetSubzone() string {
	if x != nil {
		return x.Subzone
	}
	return ""
}

// PorList represents the ports for a service
type PortList struct {
	state         protoimpl.MessageState