return err
}

// NewTierConfigMgr - creates new tier configuration manager,
func NewTierConfigMgr() *TierConfigMgr {
	return &TierConfigMgr{
		drivercache: make(map[string]WarmBackend),
		Tiers:       make(map[string]madmin.TierConfig),
	}
}

func (config *TierConfigMgr) refreshTierConfig(ctx context.Context, objAPI ObjectLayer) {
	const tierCfgRefresh = 15 * time.Minute

}

func (rt *RTimedMetrics) toMetric() madmin.TimedErrStats {
	if rt == nil {
		return madmin.TimedErrStats{}
	}
	errCounts := make(map[string]int)
	maps.Copy(errCounts, rt.ErrCounts)
	minuteTotals := rt.LastMinute.getTotal()
	hourTotals := rt.LastHour.getTotal()
	return madmin.TimedErrStats{
		LastMinute: madmin.RStat{
			Count: float64(minuteTotals.N),

func fanOutPutObject(ctx context.Context, bucket string, objectAPI ObjectLayer, fanOutEntries []minio.PutObjectFanOutEntry, fanOutBuf []byte, opts fanOutOptions) ([]ObjectInfo, []error) {
	errs := make([]error, len(fanOutEntries))
	objInfos := make([]ObjectInfo, len(fanOutEntries))

	var wg sync.WaitGroup
	for i, req := range fanOutEntries {
		wg.Add(1)
		go func(idx int, req minio.PutObjectFanOutEntry) {
			defer wg.Done()

func (b *bucketMetacache) cloneCaches() (map[string]metacache, map[string][]string) {
	b.mu.RLock()
	defer b.mu.RUnlock()
	dst := make(map[string]metacache, len(b.caches))
	maps.Copy(dst, b.caches)
	// Copy indexes
	dst2 := make(map[string][]string, len(b.cachesRoot))
	for k, v := range b.cachesRoot {
		tmp := make([]string, len(v))
		copy(tmp, v)
		dst2[k] = tmp
	}

	return dst, dst2
}

type siteResyncMetrics struct {
	sync.RWMutex
	// resyncStatus maps resync ID to resync status for peer
	resyncStatus map[string]SiteResyncStatus
	// map peer deployment ID to resync ID
	peerResyncMap map[string]resyncState
}

func newSiteResyncMetrics(ctx context.Context) *siteResyncMetrics {
	s := siteResyncMetrics{
		resyncStatus:  make(map[string]SiteResyncStatus),
		peerResyncMap: make(map[string]resyncState),
	}
	go s.save(ctx)

   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMultimap<K, V> create(int expectedKeys, int expectedValuesPerKey) {
    return new LinkedHashMultimap<>(
        Maps.capacity(expectedKeys), Maps.capacity(expectedValuesPerKey));
  }

  /**
   * Constructs a {@code LinkedHashMultimap} with the same mappings as the specified multimap. If a

		// not be required but makes reproduction much easier.
		nsLk.lockMapMutex.Lock()

		// lk3 blocks.
		lk3ch := make(chan bool)
		go func() {
			lk3ch <- nsLk.lock(ctx, "volume", "path", "source", "opsID", false, 0)
		}()

		// lk4, blocks.
		lk4ch := make(chan bool)
		go func() {
			lk4ch <- nsLk.lock(ctx, "volume", "path", "source", "opsID", false, 0)

If there's a security flaw in your code, it will still exist.

			continue
		}
		if existingValues, found := args[key]; found {
			args[key] = append(existingValues, values...)
		} else {
			args[key] = values
		}
	}

	cloneURLValues := make(url.Values, len(r.Form))
	maps.Copy(cloneURLValues, r.Form)

	for _, objLock := range []string{
		xhttp.AmzObjectLockMode,
		xhttp.AmzObjectLockLegalHold,
		xhttp.AmzObjectLockRetainUntilDate,
	} {

     *
     * - a call that consults a chain of maps, as in `mapA.getOrDefault(key, mapB.getOrDefault(key,
     *   ...))`
     *
     * So it makes sense for the parameter (and thus the return type) to be @Nullable.
     *
     * Two other points:
     *
     * 1. We'll want to use something like @PolyNull once we can make that work for the various
     * platforms we target.
     *