* serialization tests require more setup. This no-op behavior allows test authors to intersperse
 * {@code SerializableTester} calls with other, GWT-compatible tests.
 *
 * @author Mike Bostock
 * @since 10.0
 */
@GwtCompatible // but no-op!
@NullMarked
public final class SerializableTester {
  private SerializableTester() {}

  /**
   * Serializes and deserializes the specified object.

import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.Random;
import org.jspecify.annotations.NullUnmarked;

/**
 * Benchmarks for the ASCII class.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class AsciiBenchmark {
  private static final String ALPHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

import java.util.Arrays;
import java.util.Iterator;
import org.jspecify.annotations.NullUnmarked;

/**
 * Benchmarks {@link Joiner} against some common implementations of delimiter-based string joining.
 *
 * @author Adomas Paltanavicius
 */
@NullUnmarked
public class JoinerBenchmark {

  private static final String DELIMITER_STRING = ",";
  private static final char DELIMITER_CHARACTER = ',';

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test of {@link MutableClassToInstanceMap}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class MutableClassToInstanceMapTest extends TestCase {
  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();

import java.util.NoSuchElementException;
import java.util.SortedSet;
import org.jspecify.annotations.Nullable;

/**
 * Provides static utility methods for creating and working with {@link SortedMultiset} instances.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class SortedMultisets {
  private SortedMultisets() {}

  /** A skeleton implementation for {@link SortedMultiset#elementSet}. */

import java.util.HashMap;
import java.util.Map;
import java.util.WeakHashMap;
import org.jspecify.annotations.Nullable;

/**
 * Utility methods for working with {@link Enum} instances.
 *
 * @author Steve McKay
 * @since 9.0
 */
@GwtIncompatible
@J2ktIncompatible
public final class Enums {

  private Enums() {}

  /**

 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">{@code Table}</a>.
 *
 * @author Jared Levy
 * @since 7.0
 */
@GwtCompatible
public class HashBasedTable<R, C, V> extends StandardTable<R, C, V> {
  private static final class Factory<C, V> implements Supplier<Map<C, V>>, Serializable {

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;

/**
 * Contains static utility methods pertaining to primitive types and their corresponding wrapper
 * types.
 *
 * @author Kevin Bourrillion
 * @since 1.0
 */
@GwtCompatible
public final class Primitives {
  private Primitives() {}

  /** A map from primitive types to their corresponding wrapper types. */

 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#table">{@code Table}</a>.
 *
 * @author Jared Levy
 * @since 7.0
 */
@GwtCompatible
public class HashBasedTable<R, C, V> extends StandardTable<R, C, V> {
  private static final class Factory<C, V> implements Supplier<Map<C, V>>, Serializable {

 * implementations.
 *
 * <p>This base implementation has no key or value pointers, so instances of ImmutableMapEntry (but
 * not its subclasses) can be reused when copied from one ImmutableMap to another.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // unnecessary
class ImmutableMapEntry<K, V> extends SimpleImmutableEntry<K, V> {
  /**
   * Creates an {@code ImmutableMapEntry} array to hold parameterized entries. The result must never