long estimatedSize = 0L;
    ImmutableList.Builder<Spliterator.OfInt> splitrsBuilder =
        new ImmutableList.Builder<>(streams.length);
    for (IntStream stream : streams) {
      isParallel |= stream.isParallel();
      Spliterator.OfInt splitr = stream.spliterator();
      splitrsBuilder.add(splitr);
      characteristics &= splitr.characteristics();

     * ImmutableIntArray} will contain.
     *
     * @since 22.0 (but only since 33.4.0 in the Android flavor)
     */
    @CanIgnoreReturnValue
    public Builder addAll(IntStream stream) {
      Spliterator.OfInt spliterator = stream.spliterator();
      long size = spliterator.getExactSizeIfKnown();
      if (size > 0) { // known *and* nonempty
        ensureRoomFor(Ints.saturatedCast(size));
      }

    /*
     * This is an override that is not directly visible to callers, so NewApi will catch calls to
     * Collection.spliterator() where necessary.
     */
    @IgnoreJRERequirement
    public Spliterator.OfInt spliterator() {
      return Spliterators.spliterator(array, start, end, 0);
    }

    @Override
    public boolean contains(@Nullable Object target) {
      // Overridden to prevent a ton of boxing