},
                                        "health_status": "HEALTHY",
                                        "metadata": {
                                            "filter_metadata": {
                                                "envoy.transport_socket_match": {
                                                    "tlsMode": "istio"
                                                },

                  }
                }
              }
            },
            "metadata": {
              "filter_metadata": {
                "istio": {
                  "services": [
                    {
                      "name": "httpbin",
                      "namespace": "default",

                  }
                }
              }
            },
            "metadata": {
              "filter_metadata": {
                "istio": {
                  "services": [
                    {
                      "namespace": "default",
                      "name": "ratings",

                  }
                }
              }
            },
            "metadata": {
              "filter_metadata": {
                "istio": {
                  "services": [
                    {
                      "namespace": "default",
                      "name": "ratings",

			return true
		}
	}

	return false
}

// getIstioConfig returns .metadata.filter_metadata.istio.config, err
func getIstioConfig(metadata *core.Metadata) (string, error) {
	if metadata != nil {
		istioConfig := asMyProtoValue(metadata.FilterMetadata[util.IstioMetadataKey]).
			keyAsString("config")
		return istioConfig, nil
	}
	return "", fmt.Errorf("no istio config")
}