*/
@GwtCompatible
@Immutable
public final class ImmutableIntArray implements Serializable {
  private static final ImmutableIntArray EMPTY = new ImmutableIntArray(new int[0]);

  /** Returns the empty array. */
  public static ImmutableIntArray of() {
    return EMPTY;
  }

  /** Returns an immutable array containing a single value. */
  public static ImmutableIntArray of(int e0) {
    return new ImmutableIntArray(new int[] {e0});

  public void testStream() {
    ImmutableIntArray.of().stream().forEach(i -> fail());
    ImmutableIntArray.of(0, 1, 3).subArray(1, 1).stream().forEach(i -> fail());
    assertThat(ImmutableIntArray.of(0, 1, 3).stream().toArray()).isEqualTo(new int[] {0, 1, 3});
  }

  public void testSubArray() {
    ImmutableIntArray iia0 = ImmutableIntArray.of();
    ImmutableIntArray iia1 = ImmutableIntArray.of(5);

  public void testStream() {
    ImmutableIntArray.of().stream().forEach(i -> fail());
    ImmutableIntArray.of(0, 1, 3).subArray(1, 1).stream().forEach(i -> fail());
    assertThat(ImmutableIntArray.of(0, 1, 3).stream().toArray()).isEqualTo(new int[] {0, 1, 3});
  }

  public void testSubArray() {
    ImmutableIntArray iia0 = ImmutableIntArray.of();
    ImmutableIntArray iia1 = ImmutableIntArray.of(5);

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * <p><b>Note:</b> when possible, you should represent your data as an {@link ImmutableIntArray}
   * instead, which has an {@link ImmutableIntArray#asList asList} view.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Integer> asList(int... backingArray) {