*
   * @since 30.0
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  public static void awaitTerminationUninterruptibly(ExecutorService executor) {
    // TODO(cpovirk): We could optimize this to avoid calling nanoTime() at all.
    verify(awaitTerminationUninterruptibly(executor, Long.MAX_VALUE, NANOSECONDS));
  }

  /**

    assertFalse(awaitTerminationUninterruptibly(executor, 1000, MILLISECONDS));
    assertFalse(executor.isTerminated());
    assertInterrupted();
  }

  public void testTryAwaitTerminationInfiniteTimeout() {
    ExecutorService executor = newFixedThreadPool(1);
    requestInterruptIn(500);
    executor.execute(new SleepTask(1000));
    executor.shutdown();
    awaitTerminationUninterruptibly(executor);

    assertFalse(awaitTerminationUninterruptibly(executor, 1000, MILLISECONDS));
    assertFalse(executor.isTerminated());
    assertInterrupted();
  }

  public void testTryAwaitTerminationInfiniteTimeout() {
    ExecutorService executor = newFixedThreadPool(1);
    requestInterruptIn(500);
    executor.execute(new SleepTask(1000));
    executor.shutdown();
    awaitTerminationUninterruptibly(executor);

      throw new AssertionError("Unexpected exception", e);
    } finally {
      executor.shutdownNow();
      // TODO(cpovirk): assertTrue(awaitTerminationUninterruptibly(executor, 10, SECONDS));
    }
  }

  /**
   * For each possible pair of futures from {@link TestFutureBatch}, for each possible completion

      throw new AssertionError("Unexpected exception", e);
    } finally {
      executor.shutdownNow();
      // TODO(cpovirk): assertTrue(awaitTerminationUninterruptibly(executor, 10, SECONDS));
    }
  }

  /**
   * For each possible pair of futures from {@link TestFutureBatch}, for each possible completion