) (*hcm.HttpConnectionManager_Tracing, bool, error) {
	startChildSpan := false
	useCustomSampler := false
	var serviceCluster string
	var maxTagLength uint32
	var providerConfig typedConfigGenFn
	var providerName string
	if proxy.XdsNode != nil {
		serviceCluster = proxy.XdsNode.Cluster
	}
	switch provider := providerCfg.Provider.(type) {
	case *meshconfig.MeshConfig_ExtensionProvider_Zipkin:

		EnvoyHTTPAls       struct{} `json:"envoyHttpAls"`
		EnvoyTCPAls        struct{} `json:"envoyTcpAls"`
		OpenTelemetry      struct{} `json:"opentelemetry"`
	}
	clusterName struct {
		ServiceCluster     *v1alpha13.ProxyConfig_ServiceCluster      `json:"serviceCluster,omitempty"`
		TracingServiceName *v1alpha13.ProxyConfig_TracingServiceName_ `json:"tracingServiceName,omitempty"`
	}
)

type proxyConfig struct {

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",

  controlPlaneAuthPolicy: NONE
  discoveryAddress: istiod.istio-system.svc:15012
  drainDuration: 45s
  parentShutdownDuration: 1m0s
  proxyAdminPort: 15000
  proxyMetadata:
    DNS_AGENT: ""
  serviceCluster: istio-proxy
  tracing:
    zipkin:
      address: zipkin.istio-system:9411
enablePrometheusMerge: false
ingressClass: istio
ingressControllerMode: STRICT
ingressService: istio-ingressgateway

  },
  "layered_runtime": {
      "layers": [
          {

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",

  },
  "layered_runtime": {
      "layers": [
          {
            "name": "global config",