cmd := &cobra.Command{
		Use:   "diff <file|dir> <file|dir>",
		Short: "Compare manifests and generate diff",
		Long: "The diff subcommand compares manifests from two files or directories. The output is a list of\n" +
			"changed paths with the value changes shown as OLD-VALUE -> NEW-VALUE.\n" +
			"List order changes are shown as [OLD-INDEX->NEW-INDEX], with ? used where a list item is added or\n" +
			"removed.",

	if err != nil {
		return nil, "", "", "", err
	}
	return clientset, "", namespace, selector.String(), nil
}

// this is used for testing. it should not be changed in regular code.
var getFirstPodFunc func(client corev1client.PodsGetter, namespace string, selector string, timeout time.Duration,
	sortBy func([]*corev1.Pod) sort.Interface) (*corev1.Pod, int, error)

	cmd := XdsStatusCommand(ctx)
	unstableFlags := []string{"xds-via-agents", "xds-via-agents-limit"}
	cmd.PreRunE = func(cmd *cobra.Command, args []string) error {
		for _, flag := range unstableFlags {
			if cmd.PersistentFlags().Changed(flag) {
				return fmt.Errorf("--%s is experimental. Use `istioctl experimental ps --%s`", flag, flag)
			}
		}
		return nil
	}
	for _, flag := range unstableFlags {
		_ = cmd.PersistentFlags().MarkHidden(flag)
	}

		Args:  cobra.ExactArgs(0),
		PreRunE: func(cmd *cobra.Command, args []string) error {
			if !labels.IsDNS1123Label(oiArgs.common.revision) && cmd.PersistentFlags().Changed("revision") {
				return fmt.Errorf("invalid revision specified: %v", oiArgs.common.revision)
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			client, err := ctx.CLIClient()

		return cniConfigFilepath, err
	}

	if cfg.chainedCNIPlugin && strings.HasSuffix(cniConfigFilepath, ".conf") {
		// If the old CNI config filename ends with .conf, rename it to .conflist, because it has to be changed to a list
		installLog.Infof("Renaming %s extension to .conflist", cniConfigFilepath)
		err = os.Rename(cniConfigFilepath, cniConfigFilepath+"list")
		if err != nil {

`,
		Args: cobra.ExactArgs(0),
		PreRunE: func(cmd *cobra.Command, args []string) error {
			if !labels.IsDNS1123Label(iArgs.Revision) && cmd.PersistentFlags().Changed("revision") {
				return fmt.Errorf("invalid revision specified: %v", iArgs.Revision)
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClient()

change which control plane revision handles injection, it's possible to create a revision tag "prod" and label our
namespace "istio.io/rev=prod". The "prod" revision tag could point to "1-7-6" initially and then be changed to point to "1-8-1"
at some later point.

This allows operators to change which Istio control plane revision should handle injection for a namespace or set of namespaces
without manual relabeling of the "istio.io/rev" tag.
`,

		Args:  cobra.ExactArgs(0),
		PreRunE: func(cmd *cobra.Command, args []string) error {
			if !labels.IsDNS1123Label(odArgs.common.revision) && cmd.PersistentFlags().Changed("revision") {
				return fmt.Errorf("invalid revision specified: %v", odArgs.common.revision)
			}
			return nil
		},
		Run: func(cmd *cobra.Command, args []string) {

		return nil
	}

	// If a file we are watching has a change event, yield and let caller check validity
	select {
	case <-watcher.Events:
		// Something changed, and we must yield
		return nil
	case err := <-watcher.Errors:
		// We had a watch error - that's no good
		return err
	case <-ctx.Done():
		return ctx.Err()
	default:

		return err
	}
	for _, se := range ses.Items {
		if se.Spec.Resolution != networking.ServiceEntry_NONE {
			continue
		}
		changed := false
		for _, p := range se.Spec.Ports {
			if p.TargetPort != 0 && p.Number != p.TargetPort {
				changed = true
			}
		}
		if changed {
			res := ObjectToInstance(se)
			messages.Add(msg.NewUpdateIncompatibility(res,
				"ENABLE_RESOLUTION_NONE_TARGET_PORT", "1.21",