@Override
        public Lock get() {
          return new ReentrantLock(true);
        }
      };

  private static final Supplier<Semaphore> SEMAPHORE_SUPPLER =
      new Supplier<Semaphore>() {
        @Override
        public Semaphore get() {
          return new Semaphore(1, false);
        }
      };

  private static List<Striped<?>> weakImplementations() {
    return ImmutableList.<Striped<?>>builder()

        @Override
        public Lock get() {
          return new ReentrantLock(true);
        }
      };

  private static final Supplier<Semaphore> SEMAPHORE_SUPPLER =
      new Supplier<Semaphore>() {
        @Override
        public Semaphore get() {
          return new Semaphore(1, false);
        }
      };

  private static List<Striped<?>> weakImplementations() {
    return ImmutableList.<Striped<?>>builder()

    try {
      assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
    } catch (Throwable t) {
      threadUnexpectedException(t);
    }
  }

  public void await(Semaphore semaphore) {
    try {
      assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
    } catch (Throwable t) {
      threadUnexpectedException(t);
    }
  }

  //     /**