import static java.util.Collections.singleton;
import static java.util.Collections.singletonMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.SetMultimap;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.testing.EqualsTester;
import java.util.ArrayList;

  public void testCopyOf() {
    ImmutableSetMultimap<String, String> setMultimap = ImmutableSetMultimap.of("k1", "v1");
    ImmutableMultimap<String, String> setMultimapCopy = ImmutableMultimap.copyOf(setMultimap);
    assertWithMessage("copyOf(ImmutableSetMultimap) should not create a new instance")
        .that(setMultimapCopy)
        .isSameInstanceAs(setMultimap);

          K extends @Nullable Object, V extends @Nullable Object>
      extends UnmodifiableMultimap<K, V> implements SetMultimap<K, V> {
    UnmodifiableSetMultimap(SetMultimap<K, V> delegate) {
      super(delegate);
    }

    @Override
    public SetMultimap<K, V> delegate() {
      return (SetMultimap<K, V>) super.delegate();
    }

    @Override
    public Set<V> get(@ParametricNullness K key) {
      /*

          K extends @Nullable Object, V extends @Nullable Object>
      extends UnmodifiableMultimap<K, V> implements SetMultimap<K, V> {
    UnmodifiableSetMultimap(SetMultimap<K, V> delegate) {
      super(delegate);
    }

    @Override
    public SetMultimap<K, V> delegate() {
      return (SetMultimap<K, V>) super.delegate();
    }

    @Override
    public Set<V> get(@ParametricNullness K key) {
      /*

   *
   * @since 16.0
   */
  public abstract static class SetMultimapBuilder<
          K0 extends @Nullable Object, V0 extends @Nullable Object>
      extends MultimapBuilder<K0, V0> {
    SetMultimapBuilder() {}

    @Override
    public abstract <K extends K0, V extends V0> SetMultimap<K, V> build();

    @Override

   *
   * @since 16.0
   */
  public abstract static class SetMultimapBuilder<
          K0 extends @Nullable Object, V0 extends @Nullable Object>
      extends MultimapBuilder<K0, V0> {
    SetMultimapBuilder() {}

    @Override
    public abstract <K extends K0, V extends V0> SetMultimap<K, V> build();

    @Override

    suite.addTest(
        SortedSetMultimapTestSuiteBuilder.using(
                new TestStringSetMultimapGenerator() {
                  @Override
                  protected SetMultimap<String, String> create(Entry<String, String>[] entries) {
                    SetMultimap<String, String> multimap =
                        TreeMultimap.create(
                            Ordering.natural().nullsFirst(), Ordering.natural().nullsFirst());

    suite.addTest(
        SortedSetMultimapTestSuiteBuilder.using(
                new TestStringSetMultimapGenerator() {
                  @Override
                  protected SetMultimap<String, String> create(Entry<String, String>[] entries) {
                    SetMultimap<String, String> multimap =
                        TreeMultimap.create(
                            Ordering.natural().nullsFirst(), Ordering.natural().nullsFirst());

  }

  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  Collection<V> unmodifiableEmptyCollection() {
    if (unfiltered instanceof SetMultimap) {
      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {

  }

  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  Collection<V> unmodifiableEmptyCollection() {
    if (unfiltered instanceof SetMultimap) {
      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {