Len() int
}

// Stats is a collection of stats for multiple targets.
type Stats struct {
	TotalEvents        int64 // Deprecated
	EventsSkipped      int64
	CurrentQueuedCalls int64 // Deprecated
	EventsErrorsTotal  int64 // Deprecated
	CurrentSendCalls   int64 // Deprecated

	TargetStats map[TargetID]TargetStat
}

// TargetStat is the stats of a single target.
type TargetStat struct {

			Type:        "on|off",
		},
		config.HelpKV{
			Key:         ClaimPrefix,
			Description: `[DEPRECATED use 'claim_name'] JWT claim namespace prefix e.g. "customer1/"` + defaultHelpPostfix(ClaimPrefix),
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         RedirectURI,

	return Pair[T1, T2]{f1: v1, f2: v2}
}

func (p Pair[X1, _]) First() X1 {
	return p.f1
}

func (p Pair[_, X2]) Second() X2 {
	return p.f2
}

// Deprecated: Use something else.
func Clone[S ~[]T, T any](s S) S {
	return append(S(nil), s...)

	if clientConfig.GetGenericXdsConfigs() != nil {
		configs = clientConfig.GetGenericXdsConfigs()
		return configs
	}

	// FIXME: currently removing the deprecated code below may result in functions not working
	// if there is a mismatch of versions between istiod and istioctl
	// nolint: staticcheck
	for _, config := range clientConfig.GetXdsConfig() {
		var typeURL string

	// save top-level help for deprecated sub-systems in a separate map.
	deprecatedHelpKVMap := map[string]config.HelpKV{
		config.RegionSubSys: {
			Key:         config.RegionSubSys,
			Description: "[DEPRECATED - use `site` instead] label the location of the server",
		},
		config.PolicyOPASubSys: {
			Key:         config.PolicyOPASubSys,

	}

	switch progressTokens[1] {
	case "true", `"true"`: // true without double quotes is deprecated in Feb 2022
		if len(tokens) == 1 {
			return ongoingRestoreObj(), nil
		}
	case "false", `"false"`: // false without double quotes is deprecated in Feb 2022
		if len(tokens) != 2 {
			return restoreObjStatus{}, errRestoreHDRMalformed
		}

	globalConfigDir, err = newConfigDir(configDir, configSet, defaultConfigDir.Get)
	logger.FatalIf(err, "Unable to initialize the (deprecated) config directory")
	globalCertsDir, err = newConfigDir(certsDir, certsSet, defaultCertsDir.Get)
	logger.FatalIf(err, "Unable to initialize the certs directory")

	// Remove this code when we deprecate and remove config-dir.
	// This code is to make sure we inherit from the config-dir

	NATSQueueDir      = "queue_dir"
	NATSQueueLimit    = "queue_limit"
	NATSCertAuthority = "cert_authority"
	NATSClientCert    = "client_cert"
	NATSClientKey     = "client_key"

	// Streaming constants - deprecated
	NATSStreaming                   = "streaming"
	NATSStreamingClusterID          = "streaming_cluster_id"
	NATSStreamingAsync              = "streaming_async"
	NATSStreamingMaxPubAcksInFlight = "streaming_max_pub_acks_in_flight"

	},
	config.KV{
		Key:   ExcessFolders,
		Value: "50000",
	},

	// Deprecated Oct 2022
	config.KV{
		Key:           Delay,
		Value:         "",
		HiddenIfEmpty: true,
	},
	// Deprecated Oct 2022
	config.KV{
		Key:           MaxWait,
		Value:         "",
		HiddenIfEmpty: true,
	},
	// Deprecated Oct 2022
	config.KV{
		Key:           Cycle,
		Value:         "",

	ManifestsFlagHelpStr = `Specify a path to a directory of charts and profiles
(e.g. ~/Downloads/istio-` + baseVersion + `/manifests).
`
)

const (
	ChartsDeprecatedStr         = "Deprecated, use --manifests instead."
	revisionFlagHelpStr         = `Target control plane revision for the command.`
	skipConfirmationFlagHelpStr = `The skipConfirmation determines whether the user is prompted for confirmation.