import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/** An ordering that uses the natural order of the values. */
@GwtCompatible(serializable = true)
@SuppressWarnings({"unchecked", "rawtypes"}) // TODO(kevinb): the right way to explain this??
@ElementTypesAreNonnullByDefault
final class NaturalOrdering extends Ordering<Comparable<?>> implements Serializable {

import junit.framework.TestCase;

/**
 * Unit test for {@link ForwardingListMultimap}.
 *
 * @author Kurt Alfred Kluever
 */
public class ForwardingListMultimapTest extends TestCase {

  @SuppressWarnings("rawtypes")
  public void testForwarding() {
    new ForwardingWrapperTester()
        .testForwarding(
            ListMultimap.class,
            new Function<ListMultimap, ListMultimap<?, ?>>() {
              @Override

import java.lang.annotation.RetentionPolicy;
import java.util.Set;

/**
 * Optional features of classes derived from {@code Set}.
 *
 * @author George van den Driessche
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum SetFeature implements Feature<Set> {
  GENERAL_PURPOSE(CollectionFeature.GENERAL_PURPOSE);

  private final Set<Feature<? super Set>> implied;

import junit.framework.TestCase;

/**
 * Unit test for {@link ForwardingListMultimap}.
 *
 * @author Kurt Alfred Kluever
 */
public class ForwardingListMultimapTest extends TestCase {

  @SuppressWarnings("rawtypes")
  public void testForwarding() {
    new ForwardingWrapperTester()
        .testForwarding(
            ListMultimap.class,
            new Function<ListMultimap, ListMultimap<?, ?>>() {
              @Override

import junit.framework.TestCase;

/**
 * Unit test for {@link ForwardingSetMultimap}.
 *
 * @author Kurt Alfred Kluever
 */
public class ForwardingSetMultimapTest extends TestCase {

  @SuppressWarnings("rawtypes")
  public void testForwarding() {
    new ForwardingWrapperTester()
        .testForwarding(
            SetMultimap.class,
            new Function<SetMultimap, SetMultimap<?, ?>>() {
              @Override

import java.lang.annotation.RetentionPolicy;
import java.util.List;
import java.util.Set;

/**
 * Optional features of classes derived from {@code List}.
 *
 * @author George van den Driessche
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum ListFeature implements Feature<List> {
  SUPPORTS_SET,
  SUPPORTS_ADD_WITH_INDEX(CollectionFeature.SUPPORTS_ADD),

import java.lang.annotation.RetentionPolicy;
import java.util.Set;

/**
 * Optional features of classes derived from {@code Multimap}.
 *
 * @author Louis Wasserman
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum MultimapFeature implements Feature<Multimap> {
  VALUE_COLLECTIONS_SUPPORT_ITERATOR_REMOVE;

import junit.framework.TestCase;

/**
 * Unit test for {@link ForwardingSortedSetMultimap}.
 *
 * @author Kurt Alfred Kluever
 */
public class ForwardingSortedSetMultimapTest extends TestCase {

  @SuppressWarnings("rawtypes")
  public void testForwarding() {
    new ForwardingWrapperTester()
        .testForwarding(
            SortedSetMultimap.class,
            new Function<SortedSetMultimap, SortedSetMultimap<?, ?>>() {

   * ordering.
   *
   * @since 11.0 (but the bound of {@code E} was changed from {@code Object} to {@code Comparable}
   *     in 15.0)
   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  @J2ktIncompatible
  @GwtIncompatible // PriorityBlockingQueue
  public static <E extends Comparable> PriorityBlockingQueue<E> newPriorityBlockingQueue() {

          if (comparator == null) {
            // A sorted spliterator with no comparator is already using natural order.
            // (We could probably find a way to avoid rawtypes here if we wanted.)
            @SuppressWarnings({"unchecked", "rawtypes"})
            Comparator<? super E> naturalOrder =
                (Comparator<? super E>) Comparator.<Comparable>naturalOrder();
            comparator = naturalOrder;
          }