throws TimeoutException, InterruptedException, ExecutionException {
    checkNotNull(callable);
    checkNotNull(timeoutUnit);
    checkPositiveTimeout(timeoutDuration);

    Future<T> future = executor.submit(callable);

    try {
      return future.get(timeoutDuration, timeoutUnit);
    } catch (InterruptedException | TimeoutException e) {

  }

  @ParametricNullness
  @SuppressWarnings("nullness") // TODO(b/147136275): Remove once our checker understands & and |.
  final V blockingGet() throws InterruptedException, ExecutionException {
    if (Thread.interrupted()) {
      throw new InterruptedException();
    }
    @RetainedLocalRef Object localValue = valueField;
    if (localValue != null & notInstanceOfDelegatingToFuture(localValue)) {

    return delegate.isDone();
  }

  @Override
  @ParametricNullness
  public V get() throws InterruptedException, ExecutionException {
    return delegate.get();
  }

  @Override
  @ParametricNullness
  public V get(long timeout, TimeUnit unit)
      throws InterruptedException, ExecutionException, TimeoutException {
    return delegate.get(timeout, unit);
  }

  @Override

        } catch (thrown: Throwable) {
          // A task failed. Update execution state and re-throw the exception.
          withLock {
            afterRun(task, -1L, false)
          }
          if (thrown is InterruptedException) {
            Thread.currentThread().interrupt()
          } else {
            throw thrown
          }
        } finally {
          currentThread.name = oldName
        }
      }
    }

  }

  @ParametricNullness
  @SuppressWarnings("nullness") // TODO(b/147136275): Remove once our checker understands & and |.
  final V blockingGet() throws InterruptedException, ExecutionException {
    if (Thread.interrupted()) {
      throw new InterruptedException();
    }
    @RetainedLocalRef Object localValue = valueField;
    if (localValue != null & notInstanceOfDelegatingToFuture(localValue)) {

  }

  public void testExecute_idempotentConcurrently() throws InterruptedException {
    CountDownLatch okayToRun = new CountDownLatch(1);
    AtomicInteger runCalled = new AtomicInteger();
    list.add(
        new Runnable() {
          @Override
          public void run() {
            try {
              okayToRun.await();
            } catch (InterruptedException e) {
              Thread.currentThread().interrupt();

      throws InterruptedException, ExecutionException {
    assertTrue(future.isDone());
    assertFalse(future.isCancelled());

    assertTrue(latch.await(5, SECONDS));
    assertTrue(future.isDone());
    assertFalse(future.isCancelled());

    assertEquals(expectedValue, future.get());
  }

  public void testCancelledFuture() throws InterruptedException, ExecutionException {

      throws ExecutionException {
    checkState(future.isDone(), "Future was expected to be done: %s", future);
    try {
      return future.get(0, SECONDS);
    } catch (InterruptedException e) {
      throw new AssertionError();
    } catch (TimeoutException e) {
      throw new AssertionError();
    }
  }

  private TestPlatform() {}

        configHelper.setReloadInterval(-1L);
        assertEquals(-1L, configHelper.reloadInterval);
    }

    public void test_waitForNext_withPositiveInterval() throws InterruptedException {
        configHelper.setReloadInterval(20L);

        long startTime = System.currentTimeMillis();
        configHelper.waitForNext();
        long endTime = System.currentTimeMillis();

  }

  public void testExecute_idempotentConcurrently() throws InterruptedException {
    CountDownLatch okayToRun = new CountDownLatch(1);
    AtomicInteger runCalled = new AtomicInteger();
    list.add(
        new Runnable() {
          @Override
          public void run() {
            try {
              okayToRun.await();
            } catch (InterruptedException e) {
              Thread.currentThread().interrupt();