toRemove = append(toRemove, k)
			continue
		}
	}

	for _, k := range toRemove {
		delete(m, k)
		delete(m, strings.ToLower(k))
	}

	return m
}

// generates an ListBucketVersions response for the said bucket with other enumerated options.

func (fi *FileInfo) TierFreeVersionID() string {
	return fi.Metadata[ReservedMetadataPrefixLower+tierFVID]
}

// SetTierFreeVersion sets fi as a free-version. This method is used by
// lower layers to indicate a free-version.
func (fi *FileInfo) SetTierFreeVersion() {
	if fi.Metadata == nil {
		fi.Metadata = make(map[string]string)
	}
	fi.Metadata[ReservedMetadataPrefixLower+tierFVMarker] = ""
}

    public E higher(E e) {
      synchronized (mutex) {
        return delegate().higher(e);
      }
    }

    @Override
    @CheckForNull
    public E lower(E e) {
      synchronized (mutex) {
        return delegate().lower(e);
      }
    }

    @Override
    @CheckForNull
    public E pollFirst() {
      synchronized (mutex) {
        return delegate().pollFirst();

    public E higher(E e) {
      synchronized (mutex) {
        return delegate().higher(e);
      }
    }

    @Override
    @CheckForNull
    public E lower(E e) {
      synchronized (mutex) {
        return delegate().lower(e);
      }
    }

    @Override
    @CheckForNull
    public E pollFirst() {
      synchronized (mutex) {
        return delegate().pollFirst();

			AccountName:     cred.AccessKey,
			Groups:          cred.Groups,
			Action:          policy.GetObjectAction,
			BucketName:      bucketName,
			ConditionValues: getConditionValues(r, "", cred),
			IsOwner:         owner,
			ObjectName:      "",
			Claims:          cred.Claims,
		}) {
			rd = true
		}

		if globalIAMSys.IsAllowed(policy.Args{
			AccountName:     cred.AccessKey,

   * value} is greater than {@code max}, {@code max} is returned.
   *
   * @param value the {@code char} value to constrain
   * @param min the lower bound (inclusive) of the range to constrain {@code value} to
   * @param max the upper bound (inclusive) of the range to constrain {@code value} to
   * @throws IllegalArgumentException if {@code min > max}
   * @since 21.0

### Upgrade Checklist

- Test all upgrades in a lower environment (DEV, QA, UAT) before applying to production. Performing blind upgrades in production environments carries significant risk.

	meta := make(map[string]string)
	sc := rreq.OutputLocation.S3.StorageClass
	if sc == "" {
		sc = objInfo.StorageClass
	}
	meta[strings.ToLower(xhttp.AmzStorageClass)] = sc

	if rreq.Type == SelectRestoreRequest {
		for _, v := range rreq.OutputLocation.S3.UserMetadata {
			if !stringsHasPrefixFold(v.Name, "x-amz-meta") {
				meta["x-amz-meta-"+v.Name] = v.Value

   * constraining a {@code long} input to an {@code int} range.
   *
   * @param value the {@code int} value to constrain
   * @param min the lower bound (inclusive) of the range to constrain {@code value} to
   * @param max the upper bound (inclusive) of the range to constrain {@code value} to
   * @throws IllegalArgumentException if {@code min > max}
   * @since 21.0

	for k, vv := range req.Header {
		// If request header key is not in ignored headers, then add it.
		if _, ok := ignoredStreamingHeaders[http.CanonicalHeaderKey(k)]; !ok {
			headerMap[strings.ToLower(k)] = vv
		}
	}

	// Get header keys.
	headers := []string{"host"}
	for k := range headerMap {
		headers = append(headers, k)
	}
	sort.Strings(headers)

	// Get canonical headers.