public static <K, V> ImmutableSortedMap<K, V> of() {
    return (ImmutableSortedMap<K, V>) NATURAL_EMPTY_MAP;
  }

  /** Returns an immutable map containing a single entry. */
  public static <K extends Comparable<? super K>, V> ImmutableSortedMap<K, V> of(K k1, V v1) {
    return of(Ordering.natural(), k1, v1);
  }

  /** Returns an immutable map containing a single entry. */

  }

  /** Returns an instance of type token that wraps {@code type}. */
  public static <T> TypeToken<T> of(Class<T> type) {
    return new SimpleTypeToken<>(type);
  }

  /** Returns an instance of type token that wraps {@code type}. */
  public static TypeToken<?> of(Type type) {
    return new SimpleTypeToken<>(type);
  }

  /**

       */
      return inputSet.keySet().hashCode() << (inputSet.size() - 1);
    }

    @Override
    public String toString() {
      return "powerSet(" + inputSet + ")";
    }
  }

  /**
   * Returns the set of all subsets of {@code set} of size {@code size}. For example, {@code
   * combinations(ImmutableSet.of(1, 2, 3), 2)} returns the set {@code {{1, 2}, {1, 3}, {2, 3}}}.
   *

		return j.ObjectV1.Signature()
	}
	return signatureErr
}

// getModTime will return the ModTime of the underlying version.
func (j xlMetaV2Version) getModTime() time.Time {
	switch j.Type {
	case ObjectType:
		return time.Unix(0, j.ObjectV2.ModTime)
	case DeleteType:
		return time.Unix(0, j.DeleteMarker.ModTime)
	case LegacyType:
		return j.ObjectV1.Stat.ModTime
	}
	return time.Time{}
}

      latch.countDown();
    }

    boolean awaitClosed() {
      return awaitUninterruptibly(latch, 10, SECONDS);
    }

    boolean stillOpen() {
      return !awaitUninterruptibly(latch, 1, SECONDS);
    }

    @Override
    public String toString() {
      return name;
    }
  }

  static final class Waiter {

	// Anonymous request return quickly.
	if accessKey == "" || secretKey == "" {
		return req, nil
	}

	for k, v := range headers {
		req.Header.Set(k, v)
	}

	err = signRequestV2(req, accessKey, secretKey)
	if err != nil {
		return nil, err
	}

	return req, nil
}

// Returns new HTTP request object signed with signature v4.

     *
     * @param <E> the element type of {@link HashSet}
     * @param c the collection of elements to be placed in the set
     * @return a new instance of {@link HashSet}
     * @see HashSet#HashSet()
     */
    public static <E> HashSet<E> newHashSet(final Collection<? extends E> c) {
        return new HashSet<>(c);
    }

    /**

			return
		}
	}
	// write "id"
	err = en.Append(0xa2, 0x69, 0x64)
	if err != nil {
		return
	}
	err = en.WriteInt(z.ID)
	if err != nil {
		err = msgp.WrapError(err, "ID")
		return
	}
	// write "lu"
	err = en.Append(0xa2, 0x6c, 0x75)
	if err != nil {
		return
	}
	err = en.WriteTime(z.LastUpdate)
	if err != nil {
		err = msgp.WrapError(err, "LastUpdate")
		return
	}

	return madminPartitions.NewJSONWith(&info), nil
}

// GetOSInfoHandler - returns operating system's information.
func (s *peerRESTServer) GetOSInfoHandler(_ *grid.MSS) (*grid.JSON[madmin.OSInfo], *grid.RemoteErr) {
	info := madmin.GetOSInfo(context.Background(), globalLocalNodeName)
	return madminOSInfo.NewJSONWith(&info), nil
}

// GetProcInfoHandler - returns this MinIO process information.

    return segments[(hash >>> segmentShift) & segmentMask];
  }

  Segment<K, V, E, S> createSegment(int initialCapacity) {
    return entryHelper.newSegment(this, initialCapacity);
  }

  /**
   * Gets the value from an entry. Returns {@code null} if the entry is invalid, partially-collected
   * or computing.
   */
  @Nullable V getLiveValue(E entry) {
    if (entry.getKey() == null) {
      return null;