@GwtIncompatible
@SuppressWarnings("serial") // using writeReplace instead of standard serialization
public final class MutableClassToInstanceMap<B extends @Nullable Object>
    extends ForwardingMap<Class<? extends @NonNull B>, B>
    implements ClassToInstanceMap<B>, Serializable {

  /**
   * Returns a new {@code MutableClassToInstanceMap} instance backed by a {@link HashMap} using the
   * default initial capacity and load factor.
   */

import java.nio.ByteBuffer;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;

public abstract class RdmaConnection implements AutoCloseable {
    protected final InetSocketAddress remoteAddress;
    protected final InetSocketAddress localAddress;
    protected final AtomicInteger sendCredits;
    protected final AtomicInteger receiveCredits;

import org.jspecify.annotations.NullMarked;

/**
 * Create string sets for collection tests.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked
public abstract class TestStringSetGenerator implements TestSetGenerator<String> {
  @Override
  public SampleElements<String> samples() {
    return new Strings();
  }

  @Override
  public Set<String> create(Object... elements) {

import java.io.Serializable;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

@GwtCompatible
final class PairwiseEquivalence<E, T extends @Nullable E> extends Equivalence<Iterable<T>>
    implements Serializable {
  final Equivalence<E> elementEquivalence;

  PairwiseEquivalence(Equivalence<E> elementEquivalence) {
    this.elementEquivalence = Preconditions.checkNotNull(elementEquivalence);
  }

  @Override

 *
 * @author Luke Sandberg
 */
@J2ktIncompatible
@GwtIncompatible
abstract class WrappingScheduledExecutorService extends WrappingExecutorService
    implements ScheduledExecutorService {
  final ScheduledExecutorService delegate;

  protected WrappingScheduledExecutorService(ScheduledExecutorService delegate) {
    super(delegate);
    this.delegate = delegate;
  }

 *
 * @author Isaac Shum
 * @since 10.0
 */
@J2ktIncompatible
@GwtIncompatible
public abstract class ForwardingListeningExecutorService extends ForwardingExecutorService
    implements ListeningExecutorService {
  /** Constructor for use by subclasses. */
  protected ForwardingListeningExecutorService() {}

  @Override
  protected abstract ListeningExecutorService delegate();

  @Override

 * SMB2 SRV_REQUEST_RESUME_KEY response data structure. This structure contains a resume key
 * that can be used for server-side copy operations.
 *
 * @author mbechler
 *
 */
public class SrvRequestResumeKeyResponse implements Decodable {

    /**
     * Constructs a new SrvRequestResumeKeyResponse.
     * This response contains the resume key used for server-side copy operations.
     */
    public SrvRequestResumeKeyResponse() {
    }

 * This class provides basic scaffolding for DBFlute behavior invoker assistance,
 * primarily returning null implementations as placeholders for OpenSearch-specific functionality.
 *
 */
public class ImplementedInvokerAssistant implements InvokerAssistant {

    // ===================================================================================
    //                                                                           Attribute

 * Pager for managing synonym pagination.
 * This class handles the state and logic for paginating through a list of synonyms,
 * including total record count, page size, and current page number.
 */
public class SynonymPager implements Serializable {

    /**
     * Constructs a new pager for synonyms.
     */
    public SynonymPager() {
        // do nothing
    }

    private static final long serialVersionUID = 1L;

 *
 * @author Jesse Wilson
 */
@SuppressWarnings("serial") // we're overriding default serialization
public abstract class ImmutableCollection<E> extends AbstractCollection<E> implements Serializable {
  static final int SPLITERATOR_CHARACTERISTICS =
      Spliterator.IMMUTABLE | Spliterator.NONNULL | Spliterator.ORDERED;

  ImmutableCollection() {}

  @Override