* {@code ImmutableList}, use {@code stream.sorted(comparator).collect(toImmutableList())}.
   *
   * @throws NullPointerException if any element in the input is null
   * @since 21.0
   */
  public static <E> ImmutableList<E> sortedCopyOf(
      Comparator<? super E> comparator, Iterable<? extends E> elements) {
    checkNotNull(comparator);
    @SuppressWarnings("unchecked") // all supported methods are covariant

  }

  public static <E> ImmutableList<E> sortedCopyOf(
      Comparator<? super E> comparator, Iterable<? extends E> elements) {
    checkNotNull(comparator);
    @SuppressWarnings("unchecked") // all supported methods are covariant
    E[] array = (E[]) Iterables.toArray(elements);
    checkElementsNotNull(array);
    Arrays.sort(array, comparator);
    return asImmutableList(array);
  }

   * {@code ImmutableList}, use {@code stream.sorted(comparator).collect(toImmutableList())}.
   *
   * @throws NullPointerException if any element in the input is null
   * @since 21.0
   */
  public static <E> ImmutableList<E> sortedCopyOf(
      Comparator<? super E> comparator, Iterable<? extends E> elements) {
    checkNotNull(comparator);
    @SuppressWarnings("unchecked") // all supported methods are covariant