// metrics is served. This value is converted into a metric name prefix
	// using `.metricPrefix()` and is added to each metric returned.
	CollectorPath collectorPath
	// List of all metric descriptors that could be returned by the loader.
	Descriptors []MetricDescriptor
	// (Optional) Extra (constant) label KV pairs to be added to each metric in
	// the group.
	ExtraLabels map[string]string

}

func TestWriterAddFS(t *testing.T) {
	fsys := fstest.MapFS{
		"emptyfolder":          {Mode: 0o755 | os.ModeDir},
		"file.go":              {Data: []byte("hello")},
		"subfolder/another.go": {Data: []byte("world")},
		"symlink.go":           {Mode: 0o777 | os.ModeSymlink, Data: []byte("file.go")},
		// Notably missing here is the "subfolder" directory. This makes sure even
		// if we don't have a subfolder directory listed.
	}

              return null;
            }
            RangeMapEntry<K, V> candidate = null;
            if (r.lowerBound.compareTo(subRange.lowerBound) == 0) {
              // r could be truncated on the left
              Entry<Cut<K>, RangeMapEntry<K, V>> entry =
                  entriesByLowerBound.floorEntry(r.lowerBound);
              if (entry != null) {
                candidate = entry.getValue();

					RuleID: rule.ID,
					Due:    due,
				})
			}
			// No other conflicting actions in this rule can apply to an object with current version as DEL marker
			// Note: There could be other rules with earlier expiration which need to be considered.
			// See TestDelMarkerExpiration
			continue
		}

		// NoncurrentVersionExpiration
		if !obj.IsLatest && rule.NoncurrentVersionExpiration.set {

		},
	}, {
		maker: makeReg{"hello, world", 50},
		tests: []testFnc{
			testRemaining{50, 50},
			testRead{7, "hello, ", nil},
			testRemaining{43, 43},
			testRead{5, "world", nil},
			testRemaining{38, 38},
			testWriteTo{nil, 0, io.ErrUnexpectedEOF},
			testRead{1, "", io.ErrUnexpectedEOF},
			testRemaining{38, 38},
		},
	}, {
		maker: makeReg{"hello, world", 5},
		tests: []testFnc{

package tar

import (
	"errors"
	"fmt"
	"internal/godebug"
	"io/fs"
	"maps"
	"math"
	"path"
	"reflect"
	"strconv"
	"strings"
	"time"
)

// BUG: Use of the Uid and Gid fields in Header could overflow on 32-bit
// architectures. If a large value is encountered when decoding, the result
// stored in Header will be the truncated version.

var tarinsecurepath = godebug.New("tarinsecurepath")

var (

// the token is the last token.
//
// The value is useful to stop processing early or when it is necessary to
// deliver a final empty token (which is different from a nil token).
// One could achieve the same behavior with a custom error value but
// providing one here is tidier.
// See the emptyFinalToken example for a use of this value.
var ErrFinalToken = errors.New("final token")

			// Since the region sub-system cannot be (re)set as it
			// is legacy, we return an error to tell the user to
			// reset the region via the new command.
			err = Errorf("could not load region from legacy configuration as it was invalid - use 'mc admin config set myminio site region=myregion name=myname' to set a region and name (%v)", err)
			return s, err
		}

		region = regionKV.Get(RegionName)

		}

		if s.walkMu != nil {
			s.walkMu.Lock()
		}
		entries, err := s.ListDir(ctx, "", opts.Bucket, current, -1)
		if s.walkMu != nil {
			s.walkMu.Unlock()
		}
		if err != nil {
			// Folder could have gone away in-between
			if err != errVolumeNotFound && err != errFileNotFound {
				internalLogOnceIf(ctx, err, "metacache-walk-scan-dir")
			}

     * If there's no such directory, an {@code IllegalStateException} will be thrown.
     *
     * @throws IllegalStateException if the root directory could not be found
     * @see #getTopDirectory()
     * @since 4.0.0
     */
    Path getRootDirectory();

    /**
     * @since 3.3.0
     */