"application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },

  "application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },

	return ic.GetProxyServiceTargets(&model.Proxy{
		Type:            model.SidecarProxy,
		IPAddresses:     []string{serviceImportPodIP},
		Locality:        &core.Locality{Region: "r", Zone: "z"},
		ConfigNamespace: serviceImportNamespace,
		Labels: map[string]string{
			"app":                      "prod-app",
			label.SecurityTlsMode.Name: "mutual",
		},

	if pod != nil {
		var locality, nodeName string
		locality = c.getPodLocality(pod)
		if len(proxy.GetNodeName()) == 0 {
			// this can happen for an "old" proxy with no `Metadata.NodeName` set
			// in this case we set the node name in labels on the fly
			// TODO: remove this when 1.16 is EOL?
			nodeName = pod.Spec.NodeName
		}
		if len(locality) == 0 && len(nodeName) == 0 {
			return pod.Labels

  "application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },

  "application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },

  "application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },

	// Service indicates the service name of the Echo application.
	Service string

	// Version indicates the version path for calls to the Echo application.
	Version string

	// Locality (k8s only) indicates the locality of the deployed app.
	Locality string

	// Headless (k8s only) indicates that no ClusterIP should be specified.
	Headless bool

	PeerAddress  string              `json:"address"`
	Labels       map[string]string   `json:"labels"`
	Metadata     *model.NodeMetadata `json:"metadata,omitempty"`
	Locality     *core.Locality      `json:"locality,omitempty"`
	Watches      map[string][]string `json:"watches,omitempty"`
}

// AdsClients is collection of AdsClient connected to this Istiod.
type AdsClients struct {

  "application_log_config": {
    "log_format": {
        "text_format": "%Y-%m-%dT%T.%fZ\t%l\tenvoy %n %g:%#\t%v\tthread=%t"
    }
  },
  "node": {
    "id": "sidecar~1.2.3.4~foo~bar",
    "cluster": "istio-proxy",
    "locality": {
    },