//                                                                           Singleton
    //                                                                           =========
    private static final RelatedContentDbm _instance = new RelatedContentDbm();

    private RelatedContentDbm() {
    }

    public static RelatedContentDbm getInstance() {
        return _instance;
    }

    Table<String, Integer, C> swapOuter = create("bar", 1, 'a', "foo", 1, 'b', "bar", 3, 'c');
    Table<String, Integer, C> swapValues = create("foo", 1, 'c', "bar", 1, 'b', "foo", 3, 'a');

    new EqualsTester()
        .addEqualityGroup(table, hashCopy, reordered)
        .addEqualityGroup(smaller)
        .addEqualityGroup(swapOuter)
        .addEqualityGroup(swapValues)
        .testEquals();
  }

     */
    @Nonnull
    Optional<Boolean> help();

    /**
     * Returns a new instance of {@link Options} with values interpolated using the given properties.
     *
     * @param callback the callback to use for interpolation
     * @return a new {@link Options} instance with interpolated values
     */
    @Nonnull
    Options interpolate(@Nonnull UnaryOperator<String> callback);

    //                                                                           Singleton
    //                                                                           =========
    private static final WebAuthenticationDbm _instance = new WebAuthenticationDbm();

    private WebAuthenticationDbm() {
    }

    public static WebAuthenticationDbm getInstance() {
        return _instance;
    }

     */
    @Nonnull
    default DependencyResolverResult collect(@Nonnull DependencyResolverRequest request) {
        if (request.getRequestType() != DependencyResolverRequest.RequestType.COLLECT) {
            throw new IllegalArgumentException("requestType should be COLLECT when calling collect()");
        }
        return resolve(request);
    }

    /**
     * Flattens a list of nodes.

 * An exception thrown when LDAP configuration is invalid.
 */
public class LdapConfigurationException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new LDAP configuration exception with the specified detail message.
     *
     * @param message The detail message.
     */
    public LdapConfigurationException(final String message) {
        super(message);
    }

/**
 * Request body for creating label type via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

/**
 * Request body for creating role via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

/**
 * Request body for creating web configuration via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

 * This form handles the initial setup and configuration
 * in the administrative wizard interface.
 */
public class IndexForm {

    /**
     * Default constructor for index form.
     * Creates a new instance with default values.
     */
    public IndexForm() {
        // Default constructor
    }