protected void finalize() {
            future.set(null);
          }
        };
    x = null; // Hint to the JIT that x is unreachable
    GcFinalization.awaitDone(future);
    assertTrue(future.isDone());
    assertFalse(future.isCancelled());
  }

  public void testAwaitDone_Future_Cancel() {
    final SettableFuture<@Nullable Void> future = SettableFuture.create();
    Object x =
        new Object() {

              if (!future.isDone()) {
                errorMessage.set("Set call exited before future was complete.");
              }
            }
          });
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.setException(new IllegalArgumentException("failure"));
              if (!future.isDone()) {

              if (!future.isDone()) {
                errorMessage.set("Set call exited before future was complete.");
              }
            }
          });
      executor.execute(
          new Runnable() {
            @Override
            public void run() {
              future.setException(new IllegalArgumentException("failure"));
              if (!future.isDone()) {

) *Waypoint {
	// namespace to be used when the annotation doesn't include a namespace
	fallbackNamespace := o.Namespace
	// try fetching the waypoint defined on the object itself
	wp, isNone := getUseWaypoint(o, fallbackNamespace)
	if isNone {
		// we've got a local override here opting out of waypoint
		return nil
	}
	if wp != nil {

    // don't execute 'immediately'.  By checking isDone here we avoid that.
    // A corollary to all that is that we don't need to check isDone inside the loop because if we
    // get into the loop we know that we weren't done when we entered and therefore we aren't under
    // an obligation to execute 'immediately'.
    if (!isDone()) {
      Listener oldHead = listeners;

    // don't execute 'immediately'.  By checking isDone here we avoid that.
    // A corollary to all that is that we don't need to check isDone inside the loop because if we
    // get into the loop we know that we weren't done when we entered and therefore we aren't under
    // an obligation to execute 'immediately'.
    if (!isDone()) {
      Listener oldHead = listeners;

    final MockReference reference = new MockReference(frq = new FinalizableReferenceQueue());

    GcFinalization.awaitDone(
        new GcFinalization.FinalizationPredicate() {
          @Override
          public boolean isDone() {
            return reference.finalizeReferentCalled;
          }
        });
  }

  static class MockReference extends FinalizableWeakReference<Object> {

    volatile boolean finalizeReferentCalled;

    }
  }

  public interface TrackedRunnable extends Runnable {
    boolean isDone();
  }

  public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
    return new TrackedRunnable() {
      private volatile boolean done = false;

      @Override
      public boolean isDone() {
        return done;
      }

      @Override
      public void run() {