if f.IsEmpty() {
		return errXMLNotWellFormed
	}
	// A Filter must have exactly one of Prefix, Tag,
	// ObjectSize{LessThan,GreaterThan} or And specified.
	type predType uint8
	const (
		nonePred predType = iota
		prefixPred
		andPred
		tagPred
		sizeLtPred
		sizeGtPred
	)
	var predCount int
	var pType predType
	if !f.And.isEmpty() {
		pType = andPred
		predCount++
	}
	if f.Prefix.set {

	}
	return true
}

// BitrotAlgorithm specifies a algorithm used for bitrot protection.
type BitrotAlgorithm uint

const (
	// SHA256 represents the SHA-256 hash function
	SHA256 BitrotAlgorithm = 1 + iota
	// HighwayHash256 represents the HighwayHash-256 hash function
	HighwayHash256
	// HighwayHash256S represents the Streaming HighwayHash-256 hash function
	HighwayHash256S

// actions that will be implemented later.
type Action int

//go:generate stringer -type Action $GOFILE

const (
	// NoneAction means no action required after evaluating lifecycle rules
	NoneAction Action = iota
	// DeleteAction means the object needs to be removed after evaluating lifecycle rules
	DeleteAction
	// DeleteVersionAction deletes a particular version
	DeleteVersionAction

}

var globalScannerMetrics scannerMetrics

const (
	// START Realtime metrics, that only to records
	// last minute latencies and total operation count.
	scannerMetricReadMetadata scannerMetric = iota
	scannerMetricCheckMissing
	scannerMetricSaveUsage
	scannerMetricApplyAll
	scannerMetricApplyVersion
	scannerMetricTierObjSweep
	scannerMetricHealCheck
	scannerMetricILM
	scannerMetricCheckReplication

//
// The Writer currently provides no support for sparse files.
type Format int

// Constants to identify various tar formats.
const (
	// Deliberately hide the meaning of constants from public API.
	_ Format = (1 << iota) / 4 // Sequence of 0, 0, 1, 2, 4, 8, etc...

	// FormatUnknown indicates that the format is unknown.
	FormatUnknown

	// The format of the original Unix V7 tar tool prior to standardization.
	formatV7

	"github.com/minio/minio/internal/logger"
)

//go:generate stringer -type=storageMetric -trimprefix=storageMetric $GOFILE

type storageMetric uint8

const (
	storageMetricMakeVolBulk storageMetric = iota
	storageMetricMakeVol
	storageMetricListVols
	storageMetricStatVol
	storageMetricDeleteVol
	storageMetricWalkDir
	storageMetricListDir
	storageMetricReadFile
	storageMetricAppendFile
	storageMetricCreateFile

	maxWorkersWithBatchEvents = 4

	// the suffix for the configured queue dir where the logs will be persisted.
	httpLoggerExtension = ".http.log"
)

const (
	statusOffline = iota
	statusOnline
	statusClosed
)

var (
	logChBuffers = make(map[string]chan any)
	logChLock    = sync.Mutex{}
)

// Config http logger target
type Config struct {

	"encoding/json"
	"io"
	"strconv"
	"sync/atomic"
	"unicode/utf16"
)

// ValueType - defines the type of each JSON value
type ValueType int

// Different types of JSON value
const (
	Unknown ValueType = iota
	Null
	String
	Number
	Boolean
	Array
	Object
)

// MetaValue wraps a decoded interface value with the document
// position and depth at which the value was parsed
type MetaValue struct {

// object should be returned by ObjectLayer.Walk method
type WalkVersionsSortOrder uint8

const (
	// WalkVersionsSortAsc - Sort in ascending order of ModTime
	WalkVersionsSortAsc WalkVersionsSortOrder = iota
	// WalkVersionsSortDesc - Sort in descending order of ModTime
	WalkVersionsSortDesc
)

// ObjectOptions represents object options for ObjectLayer object operations
type ObjectOptions struct {

	}
	return strings.HasPrefix(descendant, arg)
}

// MetricType - represents the type of a metric.
type MetricType int

const (
	// CounterMT - represents a counter metric.
	CounterMT MetricType = iota
	// GaugeMT - represents a gauge metric.
	GaugeMT
	// HistogramMT - represents a histogram metric.
	HistogramMT
)

// rangeL - represents a range label.
const rangeL = "range"