files, err := libcni.ConfFiles(confDir, []string{".conf", ".conflist"})
	switch {
	case err != nil:
		return "", err
	case len(files) == 0:
		return "", fmt.Errorf("no networks found in %s", confDir)
	}

	sort.Strings(files)
	for _, confFile := range files {
		var confList *libcni.NetworkConfigList
		if strings.HasSuffix(confFile, ".conflist") {
			confList, err = libcni.ConfListFromFile(confFile)
			if err != nil {

			},
		},
		{
			name:                  "Skip invalid .conflist files for first valid .conflist file",
			chainedCNIPlugin:      true,
			resultFileName:        "02-calico.conflist",
			expectedOutputFile:    testDataDir + "/expected/10-calico.conflist-istioconfig",
			expectedPostCleanFile: testDataDir + "/pre/calico.conflist",
			cniConfDirOrderedFiles: []string{
				"noname_calico.conflist",

		},
		{
			name:              "intentional preempted config",
			cniConfigFilename: "list.conflist",
			cniConfName:       "list.conflist",
			chainedCNIPlugin:  true,
			existingConfFiles: map[string]string{"bridge.conf": "bridge.conf", "list.conflist.golden": "list.conflist"},
		},
		{
			name:              "CNI config file removed",

			goldenConfName:    "list.conflist.golden",
			existingConfFiles: map[string]string{"bridge.conf": "bridge.conf", "list.conflist": "list.conflist"},
		},
		{
			name:              "specified existing CNI config file (existing .conf to .conflist)",
			chainedCNIPlugin:  true,
			specifiedConfName: "bridge.conflist",
			expectedConfName:  "bridge.conflist",
			goldenConfName:    "bridge.conf.golden",

	if err != nil {
		return err
	}
	// Check the newly generated webhook does not conflict with existing ones.
	resName := webhookName
	if resName == "" {
		resName = fmt.Sprintf("%s-%s", "istio-revision-tag", tagName)
	}
	if err := analyzeWebhook(resName, istioNS, tagWhYAML, revision, kubeClient.RESTConfig()); err != nil {
		// if we have a conflict, we will fail. If --skip-confirmation is set, we will continue with a