public final Object mutex = new Object[0]; // something Serializable

  protected <K, V> Map<K, V> create() {
    TestMap<K, V> inner = new TestMap<>(new HashMap<K, V>(), mutex);
    Map<K, V> outer = Synchronized.map(inner, mutex);
    return outer;
  }

  static class TestMap<K, V> extends ForwardingMap<K, V> implements Serializable {
    public final Object mutex;
    private final Map<K, V> delegate;

import gradlebuild.docs.model.ClassMetaDataRepository;
import org.gradle.util.internal.CollectionUtils;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ClassLinkMetaData implements Serializable, Attachable<ClassLinkMetaData> {
    private final String className;
    private final String simpleName;

 * the least recently used element is removed.
 * </p>
 * @author shinsuke
 * @param <E> the type of elements maintained by this set
 */
public class LruHashSet<E> extends AbstractSet<E> implements Set<E>, java.io.Serializable {
    private static final long serialVersionUID = 1L;

    /**
     * The internal LRU hash map used to store elements.
     */
    private final LruHashMap<E, Object> map;

import static java.util.Arrays.asList;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.io.Serializable;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * A class that implements {@code Comparable} without generics, such as those found in libraries

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.entity;

import java.io.Serializable;

/**
 * Represents an image entry within a sitemap URL.
 * This class encapsulates the properties of an image as defined in the Google Image Sitemap extension.
 *
 * <p>

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.Map.Entry;
import java.util.Spliterator;
import java.util.function.Consumer;
import org.jspecify.annotations.Nullable;

/**
 * {@code entrySet()} implementation for {@link ImmutableMap}.
 *

package jcifs.internal.smb2.persistent;

import java.io.Serializable;
import java.util.Arrays;

import jcifs.internal.smb2.lease.Smb2LeaseKey;

/**
 * Information about a durable or persistent SMB handle.
 * This class holds all the necessary information to reconnect
 * a handle after network failures or server reboots.
 */
public class HandleInfo implements Serializable {

    private static final long serialVersionUID = 1L;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.pager;

import java.io.Serializable;
import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager for KeyMatch.
 */
public class KeyMatchPager implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * Default constructor.
     */

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import org.jspecify.annotations.Nullable;

/**
 * List returned by {@link ImmutableCollection#asList} that delegates {@code contains} checks to the
 * backing collection.
 *
 * @author Jared Levy

    // reflected in the underlying map.

    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

    if (parentBuilder.getFeatures().contains(CollectionFeature.SERIALIZABLE)) {
      derivedSuites.add(
          MultimapTestSuiteBuilder.using(
                  new ReserializedMultimapGenerator<K, V, M>(parentBuilder.getSubjectGenerator()))