import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.WebSocket;
import okhttp3.WebSocketListener;
import okio.ByteString;

public final class WebSocketEcho extends WebSocketListener {
  private void run() {
    OkHttpClient client = new OkHttpClient.Builder()
        .readTimeout(0,  TimeUnit.MILLISECONDS)
        .build();

    Request request = new Request.Builder()

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

/**
 * Unit tests of {@link RemovalNotification}.
 *
 * @author Ben Yu
 */
@NullUnmarked
public class RemovalNotificationTest extends TestCase {

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(
            RemovalNotification.create("one", 1, RemovalCause.EXPLICIT),

import com.google.common.collect.TableCollectionTest.RowMapTests;
import java.util.Map;
import org.jspecify.annotations.NullUnmarked;

@GwtIncompatible // TODO(hhchan): ArrayTable
@NullUnmarked
public class ArrayTableRowMapTest extends RowMapTests {
  public ArrayTableRowMapTest() {
    super(true, false, false, false);
  }

  @Override
  Table<String, Integer, Character> makeTable() {

import java.util.Map;
import org.jspecify.annotations.NullUnmarked;

@GwtIncompatible // SerializableTester
@NullUnmarked
public class ReserializedImmutableMapMapInterfaceTest
    extends AbstractImmutableMapMapInterfaceTest<String, Integer> {
  @Override
  protected Map<String, Integer> makePopulatedMap() {
    return SerializableTester.reserialize(ImmutableMap.of("one", 1, "two", 2, "three", 3));
  }

import com.google.common.collect.FilteredCollectionsTestUtil.AbstractFilteredSetTest;
import java.util.Set;
import org.jspecify.annotations.NullUnmarked;

@NullUnmarked
public final class SetsFilterHashSetTest extends AbstractFilteredSetTest<Set<Integer>> {
  @Override
  Set<Integer> createUnfiltered(Iterable<Integer> contents) {
    return newHashSet(contents);
  }

  @Override

import org.jspecify.annotations.NullUnmarked;

@GwtIncompatible // GWT's ImmutableMap emulation is backed by java.util.HashMap.
@NullUnmarked
public class SingletonImmutableMapWithUnhashableValueMapInterfaceTest
    extends RegularImmutableMapWithUnhashableValuesMapInterfaceTest {
  @Override
  protected Map<Integer, UnhashableObject> makePopulatedMap() {
    Unhashables unhashables = new Unhashables();

import org.jspecify.annotations.NullMarked;

/**
 * Unit tests for {@code SortedIterables}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class SortedIterablesTest extends TestCase {
  public void testSameComparator() {
    assertTrue(SortedIterables.hasSameComparator(Ordering.natural(), Sets.newTreeSet()));

import com.google.common.collect.TableCollectionTest.ColumnTests;
import org.jspecify.annotations.NullMarked;

@GwtCompatible
@NullMarked
public class TablesTransposeColumnTest extends ColumnTests {
  public TablesTransposeColumnTest() {
    super(false, true, true, true, true);
  }

  @Override
  Table<String, Character, Integer> makeTable() {

import static java.util.Collections.unmodifiableList;

import java.util.List;

/**
 * GWT emulated version of {@link RegularImmutableList}.
 *
 * @author Hayward Chan
 */
final class RegularImmutableList<E> extends ForwardingImmutableList<E> {
  static final ImmutableList<Object> EMPTY = new RegularImmutableList<Object>(emptyList());

  private final List<E> delegate;

  RegularImmutableList(List<E> delegate) {

import org.jspecify.annotations.Nullable;

/**
 * GWT emulation of {@link SingletonImmutableSet}.
 *
 * @author Hayward Chan
 */
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  private final E element;

  SingletonImmutableSet(E element) {
    this.element = checkNotNull(element);
  }

  @Override
  public int size() {
    return 1;
  }

  @Override