protected ServiceMetaInfo find(String ip) {
        final var istioService = istioServiceRegistry.findService(ip);
        if (!Objects.equals(config.serviceMetaInfoFactory().unknown(), istioService)) {
            return istioService;
        }

        return k8sServiceRegistry.findService(ip);
    }
@return found service info, or {@link ServiceMetaInfoFactory#unknown()} to represent not found.
oap-server/server-receiver-plugin/envoy-metrics-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/envoy/als/k8s/K8sALSServiceMeshHTTPAnalysis.java