Version string `json:"version"`

	// S3 API configuration.
	Credential auth.Credentials `json:"credential"`
	Region     string           `json:"region"`
	Worm       config.BoolFlag  `json:"worm"`

	// Storage class configuration
	StorageClass storageclass.Config `json:"storageclass"`

	// Notification queue configuration.
	Notify notify.Config `json:"notify"`

	// Logger configuration

	app.HideHelpCommand = true
	app.Flags = []cli.Flag{
		cli.BoolFlag{
			Usage:  "print each file as a separate line without formatting",
			Name:   "ndjson",
			Hidden: true,
		},
		cli.BoolFlag{
			Usage: "display inline data keys and sizes",
			Name:  "data",
		},
		cli.BoolFlag{
			Usage: "export inline data",
			Name:  "export",
		},
		cli.BoolFlag{
			Usage: "combine inline data",
			Name:  "combine",
		},

	setTrue
	setFalse
)

func triStateFlag(name string, value triState, usage string) *triState {
	flag.Var(&value, name, usage)
	return &value
}

// triState implements flag.Value, flag.Getter, and flag.boolFlag.
// They work like boolean flags: we can say vet -printf as well as vet -printf=true
func (ts *triState) Get() interface{} {
	return *ts == setTrue
}

func (ts triState) isTrue() bool {
	return ts == setTrue

func (b *boolValue) IsBoolFlag() bool { return true }

// optional interface to indicate boolean flags that can be
// supplied without "=value" text
type boolFlag interface {
	Value
	IsBoolFlag() bool
}

// -- int Value
type intValue int

func newIntValue(val int, p *int) *intValue {
	*p = val
	return (*intValue)(p)
}

	cli.IntFlag{
		Name:   "log-size",
		Usage:  "specify the maximum server log file size in bytes before its rotated",
		Value:  10 * humanize.MiByte,
		EnvVar: "MINIO_LOG_SIZE",
		Hidden: true,
	},
	cli.BoolFlag{
		Name:   "log-compress",
		Usage:  "specify if we want the rotated logs to be gzip compressed or not",
		EnvVar: "MINIO_LOG_COMPRESS",
		Hidden: true,
	},
	cli.StringFlag{
		Name:   "log-prefix",