private final String toString;

  MessageDigestHashFunction(String algorithmName, String toString) {
    this.prototype = getMessageDigest(algorithmName);
    this.bytes = prototype.getDigestLength();
    this.toString = checkNotNull(toString);
    this.supportsClone = supportsClone(prototype);
  }

  MessageDigestHashFunction(String algorithmName, int bytes, String toString) {

}

// Unit test for DeleteObject in general.
func testDeleteObject(obj ObjectLayer, instanceType string, t TestErrHandler) {
	type objectUpload struct {
		name    string
		content string
	}

	testCases := []struct {
		bucketName         string
		objectToUploads    []objectUpload
		pathToDelete       string
		objectsAfterDelete []string
	}{
		// Test 1: removes an object and checks it is the only object
		// that has been deleted.

     */
    List<String> getInactiveProfileIds();

    /**
     * Gets the system properties to use for interpolation and profile activation. The system properties are collected
     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The execution properties, never {@code null}.
     */
    Map<String, String> getSystemProperties();

    /**

public class Requirement implements Cloneable {
    private final String role;

    private final String roleHint;

    public Requirement(String role) {
        this.role = role;
        this.roleHint = null;
    }

    public Requirement(String role, String roleHint) {
        this.role = role;
        this.roleHint = roleHint;
    }

    public String getRole() {
        return role;
    }

    public void destroy() {
    }

    @Override
    public Tuple3<String, String, String> createTask(final String path, final Map<String, Object> docMap) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String thumbnailId = DocumentUtil.getValue(docMap, fessConfig.getIndexFieldId(), String.class);
        final Tuple3<String, String, String> task = new Tuple3<>(getName(), thumbnailId, path);

        return selectVersionsFrom(minimumSupported, fetchVersionsFromMavenMetadata(mavenMetadataUrl))
    }

    companion object {
        @VisibleForTesting
        @JvmStatic
        fun selectVersionsFrom(minimumSupported: String, allVersions: List<String>): List<String> {
            val versionsByMinor = allVersions

        if (info == null) {
            return;
        }

        for (final String key : info.getMetadataKeys()) {
            final String value = info.getCustomMetadataValue(key);
            addMetadata(extractData, key, value);
        }
    }

    protected void addMetadata(final ExtractData extractData, final String name, final String value) {
        if (value != null) {
            extractData.putValue(name, value);

        }
        return rawType;
    }

    public String getSignature() {
        final StringBuilder builder = new StringBuilder();

        visitSignature(new SignatureVisitor() {
            @Override
            public void visitText(String text) {
                builder.append(text);
            }

            @Override
            public void visitType(String name) {
                builder.append(name);

    static void extractFromMetadata(File metaData, Set<String> excludedPackagePatterns, Action<ClassMetaData> extractor) {
        SimpleClassMetaDataRepository<ClassMetaData> repository = new SimpleClassMetaDataRepository<>();
        repository.load(metaData);

        final Set<String> excludedPrefixes = new HashSet<>();
        final Set<String> excludedPackages = new HashSet<>();
        for (String excludePattern : excludedPackagePatterns) {

    private final Map<String, ComponentHolder<?>> singletonMap = new ConcurrentHashMap<>();

    private final Map<String, ComponentDef<?>> prototypeMap = new ConcurrentHashMap<>();

    private boolean available = true;

    public StandardCrawlerContainer() {
        initialize();
    }

    @Override
    public <T> T getComponent(final String name) {
        if ("crawlerContainer".equals(name)) {