public Integer get(int index) {
      checkElementIndex(index, size());
      return array[start + index];
    }

    @Override
    /*
     * 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);
    }

    public Long get(int index) {
      checkElementIndex(index, size());
      return array[start + index];
    }

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

   * @param isSatisfied the new guard's boolean condition (see {@link Guard#isSatisfied
   *     isSatisfied()})
   * @since 33.4.0 (but since 21.0 in the JRE flavor)
   */
  // We have to rely on users not to call this, as NewApi won't flag BooleanSupplier creation.
  @IgnoreJRERequirement
  public Guard newGuard(BooleanSupplier isSatisfied) {
    checkNotNull(isSatisfied, "isSatisfied");
    return new Guard(this) {
      @Override

    @J2ObjCIncompatible
    REAL_CALLER {
      // We call the method only after checking that it's present.
      @IgnoreJRERequirement
      @SuppressWarnings({
        "Java8ApiChecker",
        "NewApi",
        // This method is a helper, which we call from a `finally` block, as recommended.
        "ReachabilityFenceUsage",
      })
      @Override
      void reachabilityFence(@Nullable Object o) {