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;
    }

}

// GetString - returns endpoint string of i-th endpoint (0-based),
// and empty string for invalid indexes.
func (endpoints Endpoints) GetString(i int) string {
	if i < 0 || i >= len(endpoints) {
		return ""
	}
	return endpoints[i].String()
}

// GetAllStrings - returns allstring of all endpoints
func (endpoints Endpoints) GetAllStrings() (all []string) {
	for _, e := range endpoints {

    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);

type Err struct {
	msg    string
	detail string
	action string
	hint   string
}

// Clone returns a new Err struct with the same information
func (u Err) Clone() Err {
	return Err{
		msg:    u.msg,
		detail: u.detail,
		action: u.action,
		hint:   u.hint,
	}
}

// Error returns the error message
func (u Err) Error() string {
	if u.detail == "" {
		if u.msg != "" {

        }
        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);

        }
    }

    public void scriptedMetric(String name, ConditionOptionCall<ScriptedMetricAggregationBuilder> opLambda) {
        ScriptedMetricAggregationBuilder builder = regScriptedMetricA(name);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void topHits(String name, ConditionOptionCall<TopHitsAggregationBuilder> opLambda) {

    suite.addTestSuite(TreeBasedTableTest.class);
    suite.addTest(
        SortedMapTestSuiteBuilder.using(
                new TestStringSortedMapGenerator() {
                  @Override
                  protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                    TreeBasedTable<String, String, String> table = TreeBasedTable.create();
                    table.put("a", "b", "c");

    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) {