code: @Deprecated
    public static <T, E> Collector<T, ?, ImmutableMultiset<E>> toImmutableMultiset(
        Function<? super T, ? extends E> elementFunction, ToIntFunction<? super T> countFunction) {
      throw new UnsupportedOperationException();
    }
docs: Not supported. Use {@link ImmutableSortedMultiset#toImmutableSortedMultiset} instead. This
  method exists only to hide {@link ImmutableMultiset#toImmutableMultiset} from consumers of
  {@code ImmutableSortedMultiset}.
  
  @throws UnsupportedOperationException always
  @deprecated Use {@link ImmutableSortedMultiset#toImmutableSortedMultiset}.
  @since 22.0