* references to be processed.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   * @since 12.0
   */
  public static void awaitFullGc() {
    CountDownLatch finalizerRan = new CountDownLatch(1);
    WeakReference<Object> ref = createWeakReferenceWithFinalizer(finalizerRan);

    await(finalizerRan);
    awaitClear(ref);

   * references to be processed.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   * @since 12.0
   */
  public static void awaitFullGc() {
    CountDownLatch finalizerRan = new CountDownLatch(1);
    WeakReference<Object> ref = createWeakReferenceWithFinalizer(finalizerRan);

    await(finalizerRan);
    awaitClear(ref);