*
 * @author Louis Wasserman
 */
@GwtCompatible
final class SortedMultisets {
  private SortedMultisets() {}

  /** A skeleton implementation for {@link SortedMultiset#elementSet}. */
  @SuppressWarnings("JdkObsolete") // TODO(b/6160855): Switch GWT emulations to NavigableSet.
  static class ElementSet<E extends @Nullable Object> extends Multisets.ElementSet<E>
      implements SortedSet<E> {
    @Weak private final SortedMultiset<E> multiset;

 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class SortedMultisets {
  private SortedMultisets() {}

  /** A skeleton implementation for {@link SortedMultiset#elementSet}. */
  @SuppressWarnings("JdkObsolete") // TODO(b/6160855): Switch GWT emulations to NavigableSet.
  static class ElementSet<E extends @Nullable Object> extends Multisets.ElementSet<E>
      implements SortedSet<E> {
    @Weak private final SortedMultiset<E> multiset;

            CollectionSize.ANY)
        .suppressing(suppressForArrayList())
        .createTestSuite();
  }

  // We are testing LinkedList / testing our tests on LinkedList.
  @SuppressWarnings("JdkObsolete")
  public Test testsForLinkedList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {

            CollectionSize.ANY)
        .suppressing(suppressForArrayList())
        .createTestSuite();
  }

  // We are testing LinkedList / testing our tests on LinkedList.
  @SuppressWarnings("JdkObsolete")
  public Test testsForLinkedList() {
    return ListTestSuiteBuilder.using(
            new TestStringListGenerator() {
              @Override
              public List<String> create(String[] elements) {

        // DISCUSS
        "EnumOrdinal", // This violation is ubiquitous, though most are benign.
        "EqualsGetClass", // Let's agree if we want to adopt Error Prone's idea of valid equals()
        "JdkObsolete", // Most of the checks are good, but we do not want to replace all LinkedLists without a good reason

        // NEVER
        "AssignmentExpression", // Not using it is more a matter of taste.

    return MapTestSuiteBuilder.using(
            new TestStringMapGenerator() {
              @Override
              // We are testing Hashtable / testing our tests on Hashtable.
              @SuppressWarnings("JdkObsolete")
              protected Map<String, String> create(Entry<String, String>[] entries) {
                return populate(new Hashtable<String, String>(), entries);
              }
            })
        .withFeatures(

    return MapTestSuiteBuilder.using(
            new TestStringMapGenerator() {
              @Override
              // We are testing Hashtable / testing our tests on Hashtable.
              @SuppressWarnings("JdkObsolete")
              protected Map<String, String> create(Entry<String, String>[] entries) {
                return populate(new Hashtable<String, String>(), entries);
              }
            })
        .withFeatures(

      Supplier<List<V>> result = (Supplier) INSTANCE;
      return result;
    }

    @Override
    // We recommend against linkedListValues but need to keep it for compatibility.
    @SuppressWarnings("JdkObsolete")
    public List<?> get() {
      return new LinkedList<>();
    }
  }

  private static final class HashSetSupplier<V extends @Nullable Object>
      implements Supplier<Set<V>>, Serializable {

      Supplier<List<V>> result = (Supplier) INSTANCE;
      return result;
    }

    @Override
    // We recommend against linkedListValues but need to keep it for compatibility.
    @SuppressWarnings("JdkObsolete")
    public List<?> get() {
      return new LinkedList<>();
    }
  }

  private static final class HashSetSupplier<V extends @Nullable Object>
      implements Supplier<Set<V>>, Serializable {

   * syntax</a>.
   */
  @SuppressWarnings({
    "NonApiType", // acts as a direct substitute for a constructor call
    "JdkObsolete", // We recommend against this method but need to keep it for compatibility.
  })
  public static <E extends @Nullable Object> LinkedList<E> newLinkedList() {
    return new LinkedList<>();
  }

  /**