assertNull(
        "putIfAbsent(notPresent, value) should return null", getMap().putIfAbsent(k3(), v3()));
    expectAdded(e3());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutIfAbsent_supportedPresent() {
    assertEquals(
        "putIfAbsent(present, value) should return existing value",
        v0(),
        getMap().putIfAbsent(k0(), v3()));

     */
    protected JsonUtil() {
    }

    /**
     * Escapes a value as Json string.
     *
     * @param value input
     * @return escaped string.
     */
    public static String escape(final String value) {
        if (value == null) {
            return null;
        }

        char c;
        final int len = value.length();
        final StringBuilder buf = new StringBuilder(len * 2);

  var bodyLimit: Long by delegate::bodyLimit

  var serverSocketFactory: ServerSocketFactory? by delegate::serverSocketFactory

  var dispatcher: Dispatcher = QueueDispatcher()
    set(value) {
      field = value
      delegate.dispatcher = value.wrap()
    }

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

  val hostName: String
    get() {

    }

  fun addHeader(
    name: String,
    value: Any,
  ) = apply {
    headersBuilder.add(name, value.toString())
  }

  fun addHeaderLenient(
    name: String,
    value: Any,
  ) = apply {
    addHeaderLenient(headersBuilder, name, value.toString())
  }

  fun setHeader(
    name: String,
    value: Any,
  ) = apply {
    removeHeader(name)

   */

  /**
   * Returns the value associated with the specified key, or {@code null} if there is no such value.
   *
   * <p>Specifically, if any range in this range map contains the specified key, the value
   * associated with that range is returned.
   */
  @CheckForNull
  V get(K key);

  /**
   * Returns the range containing this key and its associated value, if such a range is present in

    }

    protected String expandPath(final String value) {
        if (value != null && filePathMap.containsKey(value)) {
            return filePathMap.get(value);
        }
        return value;
    }

    protected void updateThumbnailField(final String thumbnailId, final String value) {
        // TODO bulk
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

	}
	if value := env.Get(config.EnvMinIOLogQueryURL, ""); value != "" {
		os.Setenv("CONSOLE_LOG_QUERY_URL", value)
		if value := env.Get(config.EnvMinIOLogQueryAuthToken, ""); value != "" {
			os.Setenv("CONSOLE_LOG_QUERY_AUTH_TOKEN", value)
		}
	}
	if value := env.Get(config.EnvBrowserRedirectURL, ""); value != "" {
		os.Setenv("CONSOLE_BROWSER_REDIRECT_URL", value)
	}

   *
   * @param value a primitive {@code double} value
   * @return a hash code for the value
   */
  public static int hashCode(double value) {
    return ((Double) value).hashCode();
    // TODO(kevinb): do it this way when we can (GWT problem):
    // long bits = Double.doubleToLongBits(value);
    // return (int) (bits ^ (bits >>> 32));
  }

  /**

     * @param line The one-based index of the line containing the problem or {@code -1} if unknown.
     * @param column The one-based index of the column containing the problem or {@code -1} if unknown.
     * @param cause The cause of the problem, may be {@code null}.
     */
    void add(Problem.Severity severity, String message, int line, int column, Exception cause);

    /**

   */
  @CanIgnoreReturnValue
  boolean addNode(N node);

  /**
   * Adds an edge connecting {@code nodeU} to {@code nodeV} if one is not already present, and sets
   * a value for that edge to {@code value} (overwriting the existing value, if any).
   *
   * <p>If the graph is directed, the resultant edge will be directed; otherwise, it will be
   * undirected.
   *