return ImmutableSet.of(e1, e2, e3);
  }

  @Override
  protected <E extends Comparable<? super E>> Set<E> of(E e1, E e2, E e3, E e4) {
    return ImmutableSet.of(e1, e2, e3, e4);
  }

  @Override
  protected <E extends Comparable<? super E>> Set<E> of(E e1, E e2, E e3, E e4, E e5) {
    return ImmutableSet.of(e1, e2, e3, e4, e5);
  }

  @Override

  public void testSetCount_zeroToOne_supported() {
    assertSetCount(e3(), 1);
  }

  @CollectionFeature.Require({SUPPORTS_ADD, FAILS_FAST_ON_CONCURRENT_MODIFICATION})
  public void testSetCountZeroToOneConcurrentWithIteration() {
    Iterator<E> iterator = collection.iterator();
    assertSetCount(e3(), 1);
    assertThrows(ConcurrentModificationException.class, () -> iterator.next());
  }

    containsDuplicates =
        new Target(MinimalCollection.of(e0(), e0(), e3(), e3()), "containsDuplicates");
    partialOverlap = new Target(MinimalCollection.of(e2(), e3()), "partialOverlap");
    nullSingleton = new Target(Collections.<E>singleton(null), "nullSingleton");
  }

  // retainAll(empty)

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRetainAll_emptyPreviouslyEmpty() {

   */
  public static <E> ImmutableList<E> of(E e1, E e2, E e3) {
    return construct(e1, e2, e3);
  }

  /**
   * Returns an immutable list containing the given elements, in order.
   *
   * @throws NullPointerException if any element is null
   */
  public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4) {
    return construct(e1, e2, e3, e4);
  }

  /**

  }

  public static <E> ImmutableList<E> of(E e1, E e2, E e3) {
    return new RegularImmutableList<E>(ImmutableList.<E>nullCheckedList(e1, e2, e3));
  }

  public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4) {
    return new RegularImmutableList<E>(ImmutableList.<E>nullCheckedList(e1, e2, e3, e4));
  }

  public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5) {

  public void testSetCount_zeroToOne_supported() {
    assertSetCount(e3(), 1);
  }

  @CollectionFeature.Require({SUPPORTS_ADD, FAILS_FAST_ON_CONCURRENT_MODIFICATION})
  public void testSetCountZeroToOneConcurrentWithIteration() {
    Iterator<E> iterator = collection.iterator();
    assertSetCount(e3(), 1);
    assertThrows(ConcurrentModificationException.class, () -> iterator.next());
  }

    subList.add(e3());
    expectAdded(0, e3());
  }

  @ListFeature.Require(SUPPORTS_SET)
  @CollectionSize.Require(absent = ZERO)
  public void testSubList_subListSetAffectsOriginal() {
    List<E> subList = getList().subList(0, 1);
    subList.set(0, e3());
    List<E> expected = copyToList(createSamplesArray());
    expected.set(0, e3());
    expectContents(expected);
  }

    subList.add(e3());
    expectAdded(0, e3());
  }

  @ListFeature.Require(SUPPORTS_SET)
  @CollectionSize.Require(absent = ZERO)
  public void testSubList_subListSetAffectsOriginal() {
    List<E> subList = getList().subList(0, 1);
    subList.set(0, e3());
    List<E> expected = copyToList(createSamplesArray());
    expected.set(0, e3());
    expectContents(expected);
  }

                "http://www.codelibs.org/");
        assertUrlLink("http://www.codelibs.org/あ", //
                "http://www.codelibs.org/あ");
        assertUrlLink("http://www.codelibs.org/%E3%81%82", //
                "http://www.codelibs.org/%E3%81%82");
        assertUrlLink("http://www.codelibs.org/%z", //
                "http://www.codelibs.org/%z");
        assertUrlLink("http://www.codelibs.org/?a=1&b=2", //

   * one specified is included.
   *
   * @throws NullPointerException if any element is null
   */
  public static <E extends Comparable<? super E>> ImmutableSortedSet<E> of(E e1, E e2, E e3) {
    return construct(Ordering.natural(), 3, e1, e2, e3);
  }

  /**
   * Returns an immutable sorted set containing the given elements sorted by their natural ordering.