*
   * @throws NullPointerException if any of {@code elements} is null
   */
  public static <E> ImmutableMultiset<E> copyOf(Iterable<? extends E> elements) {
    if (elements instanceof ImmutableMultiset) {
      @SuppressWarnings("unchecked") // all supported methods are covariant
      ImmutableMultiset<E> result = (ImmutableMultiset<E>) elements;
      if (!result.isPartialView()) {
        return result;
      }
    }

   */
  public static <E> ImmutableMultiset<E> copyOf(Iterable<? extends E> elements) {
    if (elements instanceof ImmutableMultiset) {
      @SuppressWarnings("unchecked") // all supported methods are covariant
      ImmutableMultiset<E> result = (ImmutableMultiset<E>) elements;
      if (!result.isPartialView()) {
        return result;
      }
    }
    ImmutableMultiset.Builder<E> builder =

    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_immutableMultiset() {
    Collection<String> c = ImmutableMultiset.of("a", "b", "c");
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testBuilderAdd() {
    ImmutableMultiset<String> multiset =
        new ImmutableMultiset.Builder<String>().add("a").add("b").add("a").add("c").build();

   * {@code stream.map(function).collect(Collectors.toCollection(supplier))}.
   *
   * <p>To collect to an {@link ImmutableMultiset}, use {@link
   * ImmutableMultiset#toImmutableMultiset}.
   *
   * @since 33.2.0 (available since 22.0 in guava-jre)
   */
  @SuppressWarnings({"AndroidJdkLibsChecker", "Java7ApiChecker"})

    LinkedHashMultiset<E> multiset = LinkedHashMultiset.create();
    multiset.add(freshElement);
    return multiset;
  }

  @Generates
  static <E> ImmutableMultiset<E> generateImmutableMultiset(E freshElement) {
    return ImmutableMultiset.of(freshElement);
  }

  @Generates
  static <E extends Comparable<E>> SortedMultiset<E> generateSortedMultiset(E freshElement) {

@GwtIncompatible // hasn't been tested yet
@ElementTypesAreNonnullByDefault
public abstract class ImmutableSortedMultiset<E> extends ImmutableMultiset<E>
    implements SortedMultiset<E> {
  // TODO(lowasser): GWT compatibility

  /**
   * Returns a {@code Collector} that accumulates the input elements into a new {@code
   * ImmutableMultiset}. Elements are sorted by the specified comparator.
   *

    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_immutableMultiset() {
    Collection<String> c = ImmutableMultiset.of("a", "b", "c");
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testBuilderAdd() {
    ImmutableMultiset<String> multiset =
        new ImmutableMultiset.Builder<String>().add("a").add("b").add("a").add("c").build();

          .put(
              SortedSetMultimap.class,
              Multimaps.unmodifiableSortedSetMultimap(TreeMultimap.create()))
          .put(Multiset.class, ImmutableMultiset.of())
          .put(ImmutableMultiset.class, ImmutableMultiset.of())
          .put(SortedMultiset.class, ImmutableSortedMultiset.of())
          .put(ImmutableSortedMultiset.class, ImmutableSortedMultiset.of())

          .put(
              SortedSetMultimap.class,
              Multimaps.unmodifiableSortedSetMultimap(TreeMultimap.create()))
          .put(Multiset.class, ImmutableMultiset.of())
          .put(ImmutableMultiset.class, ImmutableMultiset.of())
          .put(SortedMultiset.class, ImmutableSortedMultiset.of())
          .put(ImmutableSortedMultiset.class, ImmutableSortedMultiset.of())

    LinkedHashMultiset<E> multiset = LinkedHashMultiset.create();
    multiset.add(freshElement);
    return multiset;
  }

  @Generates
  static <E> ImmutableMultiset<E> generateImmutableMultiset(E freshElement) {
    return ImmutableMultiset.of(freshElement);
  }

  @Generates
  static <E extends Comparable<E>> SortedMultiset<E> generateSortedMultiset(E freshElement) {