* @param key key to associate with values in the collection
   * @return an empty collection of values
   */
  Collection<V> createCollection(@ParametricNullness K key) {
    return createCollection();
  }

  Map<K, Collection<V>> backingMap() {
    return map;
  }

  // Query Operations

  @Override
  public int size() {
    return totalSize;
  }

  @Override

	if err != nil {
		return User{}, err
	}
	defer resp.Body.Close()
	switch resp.StatusCode {
	case http.StatusOK, http.StatusPartialContent:
		var u User
		if err = json.NewDecoder(resp.Body).Decode(&u); err != nil {
			return User{}, err
		}
		return u, nil
	case http.StatusNotFound:
		return User{
			ID:      userid,
			Enabled: false,
		}, nil
	case http.StatusUnauthorized:

     *
     * @return the default filter chain
     */
    protected FilterChain createDefaultFilterChain() {
        return query -> {
            try {
                return createQueryParser().parse(query);
            } catch (final ParseException e) {
                throw new QueryParseException(e);
            }
        };
    }

    /**

     *
     * @return the unique identifier of type IDTYPE.
     */
    IDTYPE getId();

    /**
     * Sets the unique identifier for the URL queue.
     *
     * @param id the unique identifier to set
     */
    void setId(IDTYPE id);

    /**
     * Retrieves the session ID associated with this URL queue.
     *
     * @return the session ID as a String.
     */

    protected T doForward(String value) {
      return Enum.valueOf(enumClass, value);
    }

    @Override
    protected String doBackward(T enumValue) {
      return enumValue.name();
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof StringConverter) {
        StringConverter<?> that = (StringConverter<?>) obj;
        return this.enumClass.equals(that.enumClass);
      }

     *
     * @return a {@link SchemaFactory} for W3C XML Schema
     */
    public static SchemaFactory newW3cXmlSchemaFactory() {
        return newW3cXmlSchemaFactory(false);
    }

    /**
     * Creates a {@link SchemaFactory} for W3C XML Schema.
     *
     * @param external
     *            If {@code true}, external access is allowed.
     * @return a {@link SchemaFactory} for W3C XML Schema
     */

     *
     * @return the server address
     */
    public String getServerAddress() {
        return serverAddress;
    }

    /**
     * Sets the server address.
     *
     * @param serverAddress the server address
     */
    public void setServerAddress(String serverAddress) {
        this.serverAddress = serverAddress;
    }

    /**
     * Gets the registration flags.
     *
     * @return the flags

    }

    public Severity getSeverity() {
        return severity;
    }

    public Version getVersion() {
        return version;
    }

    public Exception getException() {
        return exception;
    }

    public ModelProblemCollectorRequest setException(Exception exception) {
        this.exception = exception;
        return this;
    }

    public String getMessage() {

      if (end > start && result < 0) { // overflow
        return Long.MAX_VALUE;
      }
      if (end < start && result > 0) { // underflow
        return Long.MIN_VALUE;
      }
      return result;
    }

    @Override
    public Long minValue() {
      return Long.MIN_VALUE;
    }

    @Override
    public Long maxValue() {
      return Long.MAX_VALUE;
    }

      delegate.dispatcher = value.wrap()
    }

  val port: Int
    get() {
      before() // This implicitly starts the delegate.
      return delegate.port
    }

  val hostName: String
    get() {
      before() // This implicitly starts the delegate.
      return delegate.hostName
    }

  var protocolNegotiationEnabled: Boolean by delegate::protocolNegotiationEnabled

  @get:JvmName("protocols")