* good reference implementation. As with {@code IteratorTester}, a concrete subclass must provide
 * target iterators on demand. It also requires three additional constructor parameters: {@code
 * elementsToInsert}, the elements to be passed to {@code set()} and {@code add()} calls; {@code
 * features}, the features supported by the iterator; and {@code expectedElements}, the elements the

 * single-element enum to maintain serialization guarantees. See Effective Java (2nd Edition), Item
 * 3: "Enforce the singleton property with a private constructor or an enum type". For example:
 *
 * {@snippet :
 * public enum PersonFunnel implements Funnel<Person> {
 *   INSTANCE;
 *   public void funnel(Person person, PrimitiveSink into) {

 * query field properties and capabilities.
 */
public class QueryFieldConfig {

    /**
     * Default constructor.
     */
    public QueryFieldConfig() {
        // Default constructor
    }

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(QueryFieldConfig.class);

import jakarta.annotation.Resource;

/**
 * Admin action for Dictionary management.
 *
 */
public class AdminDictAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminDictAction() {
        super();
    }

    /** The role for this action. */
    public static final String ROLE = "admin-dict";

 * value, the edit will fail silently. Callers should handle other problems by catching
 * `IOException` and responding appropriately.
 *
 * @constructor Create a cache which will reside in [directory]. This cache is lazily initialized on
 *     first access and will be created if it does not exist.
 * @param directory a writable directory.

    /** Timer for managing process destruction. */
    private Timer destoryTimer;

    /**
     * Default constructor for CommandGenerator.
     */
    public CommandGenerator() {
        super();
    }

    /**
     * Initializes the command generator after construction.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

import org.codelibs.fess.job.JobExecutor;
import org.codelibs.fess.util.ComponentUtil;

/**
 * This class executes a script.
 */
public class ScriptExecutor extends JobExecutor {

    /**
     * Constructor.
     */
    public ScriptExecutor() {
        super();
    }

    @Override
    public Object execute(final String scriptType, final String script) {
        final Map<String, Object> params = new HashMap<>();

    protected final FessConfig fessConfig;

    // ===================================================================================
    //                                                                         Constructor
    //                                                                         ===========
    public FessTimeResourceProvider(final FessConfig fessConfig) {
        this.fessConfig = fessConfig;
    }

import java.util.Date;

import org.codelibs.fess.app.web.admin.dict.ListForm;

/**
 * The request body for listing dictionaries.
 */
public class ListBody extends ListForm {
    /**
     * Default constructor.
     */
    public ListBody() {
        super();
    }

    /** The ID of the dictionary. */
    public String id;
    /** The type of the dictionary. */
    public String type;

 * This class extends EditForm to inherit the necessary form validation and binding capabilities
 * for Kuromoji dictionary management operations.
 */
public class EditBody extends EditForm {

    /**
     * Default constructor.
     */
    public EditBody() {
        super();
    }