}));
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testComputeIfAbsent_unsupportedPresentExistingValue() {
    try {
      assertEquals(
          "computeIfAbsent(present, returnsCurrentValue) should return present or throw",
          v0(),
          getMap()
              .computeIfAbsent(
                  k0(),

   */
  @JvmOverloads
  fun charset(defaultValue: Charset? = null): Charset? {
    val charset = parameter("charset") ?: return defaultValue
    return try {
      Charset.forName(charset)
    } catch (_: IllegalArgumentException) {
      defaultValue // This charset is invalid or unsupported. Give up.
    }
  }

  /**

Configure and install casdoor server by following [Casdoor Server Installation](https://casdoor.org/docs/basic/server-installation).
For a quick installation, docker-compose reference configs are also available on the [Casdoor Try with Docker](https://casdoor.org/docs/basic/try-with-docker).

### Configure Casdoor

- Go to Applications
  - Create or use an existing Casdoor application
  - Edit the application
    - Copy `Client ID` and `Client secret`

        oldProps.putAll(System.getProperties());
        ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
        try (C context = createContext(invokerRequest)) {
            if (contextConsumer != null) {
                contextConsumer.accept(context);
            }
            try {
                if (context.containerCapsule != null

        }

        if (pomFile == null) {
            Artifact pomArtifact = new DefaultArtifact(groupId, artifactId, "", "pom", version);

            try {
                ArtifactRequest request = new ArtifactRequest(pomArtifact, repositories, context);
                request.setTrace(trace);
                pomArtifact = resolver.resolveArtifact(session, request).getArtifact();

      @Override public void onFailure(Call call, IOException e) {
        e.printStackTrace();
      }

      @Override public void onResponse(Call call, Response response) throws IOException {
        try (ResponseBody responseBody = response.body()) {
          if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

          Headers responseHeaders = response.headers();

  public void run() throws Exception {
    Request request = new Request.Builder()
        .url("https://api.github.com/gists/c2a7c39532239ff261be")
        .build();
    try (Response response = client.newCall(request).execute()) {
      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      Gist gist = gistJsonAdapter.fromJson(response.body().source());

    }

    SubscriberExceptionContext toContext() {
      return new SubscriberExceptionContext(eventBus, new Object(), this, subscriberMethod());
    }

    private static Method subscriberMethod() {
      try {
        return DummySubscriber.class.getMethod("handle", Object.class);
      } catch (NoSuchMethodException e) {
        throw new AssertionError(e);
      }
    }
  }

	return err.message
}

func errCSVParsingError(err error) *s3Error {
	return &s3Error{
		code:       "CSVParsingError",
		message:    "Encountered an error parsing the CSV file. Check the file and try again.",
		statusCode: 400,
		cause:      err,
	}
}

func errInvalidTextEncodingError() *s3Error {
	return &s3Error{
		code:       "InvalidTextEncoding",
		message:    "UTF-8 encoding is required.",

        getMaxWorkerHeap().convention("1g");
    }

    // it's easier to do this via reflection than to copy the whole task
    private void addKotlinCompilerToJapicmpClasspath() {
        try {
            Field additionalJapicmpClasspathField = JapicmpTask.class.getDeclaredField("additionalJapicmpClasspath");
            additionalJapicmpClasspathField.setAccessible(true);