// unsafe, comparator() returns a comparator on the specified type
  // TODO(kevinb): evaluate whether or not of().comparator() should return null
  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) {

      if (queryNamesAndValues == null) return emptySet()
      val result = LinkedHashSet<String>()
      for (i in 0 until queryNamesAndValues.size step 2) {
        result.add(queryNamesAndValues[i]!!)
      }
      return result.readOnly()
    }

  /**
   * Returns all values for the query parameter `name` ordered by their appearance in this
   * URL. For example this returns `["banana"]` for `queryParameterValue("b")` on

      case 0:
        return none();
      case 1:
        return is(sequence.charAt(0));
      case 2:
        return isEither(sequence.charAt(0), sequence.charAt(1));
      default:
        // TODO(lowasser): is it potentially worth just going ahead and building a precomputed
        // matcher?
        return new AnyOf(sequence);
    }
  }

  /**

	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.

          this.count = newCount; // write-volatile
          return true;
        }
      }

      return false;
    }

    /**
     * Returns {@code true} if the value has been partially collected, meaning that the value is
     * null.
     */
    static <K, V, E extends InternalEntry<K, V, E>> boolean isCollected(E entry) {
      return entry.getValue() == null;
    }

    /**

		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{}
}

  // unsafe, comparator() returns a comparator on the specified type
  // TODO(kevinb): evaluate whether or not of().comparator() should return null
  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 result;
    }
    return new UnmodifiableIterator<T>() {
      @Override
      public boolean hasNext() {
        return iterator.hasNext();
      }

      @Override
      @ParametricNullness
      public T next() {
        return iterator.next();
      }
    };
  }

  /**
   * Simply returns its argument.
   *

	// 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.

				return auth.AccountOn
			}
			return auth.AccountOff
		}(),
	})

	if err := store.saveUserIdentity(ctx, accessKey, regUser, uinfo); err != nil {
		return updatedAt, err
	}

	if err := cache.updateUserWithClaims(accessKey, uinfo); err != nil {
		return updatedAt, err
	}

	return uinfo.UpdatedAt, nil
}