*       <i>j</i><sup>th</sup> item in the <i>i</i><sup>th</sup> equality group, where both equality
 *       groups and the items within equality groups are numbered starting from 1. When either a
 *       constructor argument or an equal object is provided, that becomes group 1.
 * </ul>
 *
 * @author Jim McMaster
 * @author Jige Yu
 * @since 10.0
 */
@GwtCompatible
@NullMarked
public final class EqualsTester {

    /** Map of keys to arrays of extractors */
    protected Map<String, Extractor[]> extractorMap = new HashMap<>();

    /**
     * Constructs a new ExtractorFactory.
     */
    public ExtractorFactory() {
        // Default constructor
    }

    /**
     * Adds an extractor to the factory for the specified key.

 * caching, pagination, and user interface functionality.
 *
 */
public class ViewHelper {

    /**
     * Default constructor for ViewHelper.
     */
    public ViewHelper() {
        // Default constructor
    }

    private static final Logger logger = LogManager.getLogger(ViewHelper.class);

    /** Request attribute key for screen width */

   * collections. If not specified, the collection tests will examine the value returned by {@link
   * Object#toString}.
   */
  NON_STANDARD_TOSTRING,

  /**
   * Indicates that the constructor or factory method of a collection, usually an immutable set,
   * throws an {@link IllegalArgumentException} when presented with duplicate elements instead of

 *
 * @author Kurt Alfred Kluever
 * @since 10.0
 */
@J2ktIncompatible
@GwtIncompatible
public abstract class ForwardingExecutorService extends ForwardingObject
    implements ExecutorService {
  /** Constructor for use by subclasses. */
  protected ForwardingExecutorService() {}

  @Override
  protected abstract ExecutorService delegate();

  @CheckReturnValue
  @Override

 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

    protected Set<String> availableSearcherNameSet;

    /**
     * Default constructor for RankFusionProcessor.
     * Initializes the processor with default values. The actual initialization
     * is performed by the init() method which is called after construction.
     */
    public RankFusionProcessor() {
        // Default constructor - initialization is done in init() method
    }

    /**

import org.opensearch.index.query.QueryBuilder;

/**
 * Query command for phrase queries.
 */
public class PhraseQueryCommand extends QueryCommand {

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

    private static final Logger logger = LogManager.getLogger(PhraseQueryCommand.class);

    @Override

 * @since 2.0
 */
@GwtCompatible
public abstract class ForwardingMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends ForwardingObject implements Multimap<K, V> {

  /** Constructor for use by subclasses. */
  protected ForwardingMultimap() {}

  @Override
  protected abstract Multimap<K, V> delegate();

  @Override
  public Map<K, Collection<V>> asMap() {
    return delegate().asMap();

 */
@GwtCompatible
public abstract class ForwardingSet<E extends @Nullable Object> extends ForwardingCollection<E>
    implements Set<E> {
  // TODO(lowasser): identify places where thread safety is actually lost

  /** Constructor for use by subclasses. */
  protected ForwardingSet() {}

  @Override
  protected abstract Set<E> delegate();

  @Override
  public boolean equals(@Nullable Object object) {