}

  /**
   * Just like fail(reason), but additionally recording (using threadRecordFailure) any
   * AssertionFailedError thrown, so that the current testcase will fail.
   */
  public void threadFail(String reason) {
    try {
      fail(reason);
    } catch (AssertionFailedError t) {
      threadRecordFailure(t);
      fail(reason);
    }
  }

  /**

  public final void sort(@Nullable Comparator<? super E> c) {
    throw new UnsupportedOperationException();
  }

  /**
   * Returns this list instance.
   *
   * @since 2.0
   * @deprecated There is no reason to use this; it always returns {@code this}.
   */
  @InlineMe(replacement = "this")
  @Deprecated
  @Override
  public final ImmutableList<E> asList() {
    return this;
  }

  @Override

   * 0}.
   *
   * @throws IllegalArgumentException if {@code a < 0} or {@code b < 0}
   */
  public static long gcd(long a, long b) {
    /*
     * The reason we require both arguments to be >= 0 is because otherwise, what do you return on
     * gcd(0, Long.MIN_VALUE)? BigInteger.gcd would return positive 2^63, but positive 2^63 isn't an
     * int.
     */

  }

  /**
   * Just like fail(reason), but additionally recording (using threadRecordFailure) any
   * AssertionFailedError thrown, so that the current testcase will fail.
   */
  public void threadFail(String reason) {
    try {
      fail(reason);
    } catch (AssertionFailedError t) {
      threadRecordFailure(t);
      fail(reason);
    }
  }

  /**

 * guarantee that as long as we also require the input type to be non-null[*] (which is a
 * requirement that existing callers already fulfill).
 *
 * Disclaimer: Part of the reason that callers are so well adapted to `Function<A, B>` may be that
 * that is how the signature looked even prior to this comment! So naturally any change can break

    return new ArrayList<>();
  }

  /**
   * Creates a <i>mutable</i> {@code ArrayList} instance containing the given elements.
   *
   * <p><b>Note:</b> essentially the only reason to use this method is when you will need to add or
   * remove elements later. Otherwise, for non-null elements use {@link ImmutableList#of()} (for

   * This is useful if the given service uses daemon threads, and we want to keep the JVM from
   * exiting immediately on shutdown, instead giving these daemon threads a chance to terminate
   * normally.
   *
   * @param service ExecutorService which uses daemon threads
   * @param terminationTimeout how long to wait for the executor to finish before terminating the
   *     JVM

   * description of CL 265462958.
   */
  // TODO(user): Write more tests for memory retention.
  @ForOverride
  @OverridingMethodsMustInvokeSuper
  void releaseResources(ReleaseResourcesReason reason) {
    checkNotNull(reason);
    /*
     * All elements of `futures` are completed, or this future has already completed and read
     * `futures` into a local variable (in preparation for propagating cancellation to them). In

       * fastest (more than twice as fast as the Java implementation, vs ~1.5x with non-final static
       * fields, on x86_32) under the Hotspot server compiler. The reason is obviously that the
       * non-final fields need to be reloaded inside the loop.
       *
       * And, no, defining (final or not) local variables out of the loop still isn't as good

 * Generally speaking, this class reduces object allocation and memory consumption at the price of
 * moderately increased constant factors of CPU. Only use this class when there is a specific reason
 * to prioritize memory over CPU.
 *
 * @author Dimitris Andreou
 * @author Jon Noack
 */
@GwtIncompatible // not worth using in GWT for now
@ElementTypesAreNonnullByDefault