/**
   * Obsolete; formerly used to indicate when a value was GWT serializable back before Guava dropped
   * support for GWT serialization.
   *
   * @see <a href=
   *     "https://www.gwtproject.org/doc/latest/DevGuideServerCommunication#DevGuideSerializableTypes">
   *     Documentation about GWT serialization</a>
   */
  boolean serializable() default false;

  /**

   * results in the same object too.
   *
   * @since 14.0 (since 10.0 as {@code DiscreteDomains.integers()})
   */
  public static DiscreteDomain<Integer> integers() {
    return IntegerDomain.INSTANCE;
  }

  private static final class IntegerDomain extends DiscreteDomain<Integer> implements Serializable {

   * to pass it in here. Instead, simply subclass {@code Ordering} and implement its {@code compare}
   * method directly.
   *
   * <p>The returned object is serializable if {@code comparator} is serializable.
   *
   * <p><b>Java 8+ users:</b> this class is now obsolete as explained in the class documentation, so
   * there is no need to use this method.
   *

        super(0);
      }
    }

    @Keep
    public static final class DummyRunnable implements Runnable, Serializable {
      @Override
      public void run() {}
    }

    @Keep
    public static final class DummyThreadFactory implements ThreadFactory, Serializable {
      @Override
      public Thread newThread(Runnable r) {
        return new Thread(r);
      }
    }

    @Keep

import static com.google.common.base.Preconditions.checkState;

import com.google.errorprone.annotations.Immutable;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.nio.ByteBuffer;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

/**
 * {@link HashFunction} adapter for {@link MessageDigest} instances.

import com.google.errorprone.annotations.ForOverride;
import com.google.errorprone.annotations.InlineMe;
import com.google.errorprone.annotations.concurrent.LazyInit;
import com.google.j2objc.annotations.RetainedWith;
import java.io.Serializable;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

/**
 * A function from {@code A} to {@code B} with an associated <i>reverse</i> function from {@code B}

 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.Helpers.copyToList;
import static com.google.common.collect.testing.features.CollectionFeature.SERIALIZABLE;
import static com.google.common.collect.testing.features.CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.features.Feature;

 * preserve equality behavior, or override {@code equals} directly.
 *
 * <p>The {@code toString} method is forwarded to the delegate. Although this class does not
 * implement {@link Serializable}, a serializable subclass may be created since this class has a
 * parameter-less constructor.
 *
 * @author Mike Bostock
 * @since 2.0
 */
@GwtCompatible
public abstract class ForwardingObject {

import com.google.errorprone.annotations.ForOverride;
import com.google.errorprone.annotations.InlineMe;
import com.google.errorprone.annotations.concurrent.LazyInit;
import com.google.j2objc.annotations.RetainedWith;
import java.io.Serializable;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

/**
 * A function from {@code A} to {@code B} with an associated <i>reverse</i> function from {@code B}

 * limitations under the License.
 */

package com.google.common.collect.testing.google;

import static com.google.common.collect.testing.features.CollectionFeature.SERIALIZABLE;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.BiMap;