networkID = out.endpointNetwork(proxy.IPAddresses[0])
	}
	out.labels = labelutil.AugmentLabels(proxy.Labels, c.Cluster(), locality, out.nodeName, networkID)
	return out
}

func (b *EndpointBuilder) buildIstioEndpoint(
	endpointAddress string,
	endpointPort int32,
	svcPortName string,
	discoverabilityPolicy model.EndpointDiscoverabilityPolicy,
	healthStatus model.HealthStatus,
) *model.IstioEndpoint {
	if b == nil {

	// if no workload handler registered, skip building WorkloadInstance
	if len(pc.c.handlers.GetWorkloadHandlers()) == 0 {
		return
	}
	// fire instance handles for workload
	ep := pc.c.NewEndpointBuilder(pod).buildIstioEndpoint(pod.Status.PodIP, 0, "", model.AlwaysDiscoverable, model.Healthy)
	workloadInstance := &model.WorkloadInstance{
		Name:      pod.Name,
		Namespace: pod.Namespace,
		Kind:      model.PodKind,
		Endpoint:  ep,

				var portNum int32
				if port.Port != nil {
					portNum = *port.Port
				}
				var portName string
				if port.Name != nil {
					portName = *port.Name
				}

				istioEndpoint := builder.buildIstioEndpoint(a, portNum, portName, discoverabilityPolicy, healthStatus)
				endpoints = append(endpoints, istioEndpoint)
			}
		}
	}
	esc.endpointCache.Update(hostName, slice.Name, endpoints)
}