// ? extends T
    assertAssignable(new TypeToken<List<N11>>() {}, new TypeToken<List<? extends N1>>() {});
    assertNotAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends N11>>() {});
    assertNotAssignable(new TypeToken<List<Number>>() {}, new TypeToken<List<? extends N11>>() {});

    // ? extends Number
    assertAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends Number>>() {});

  final TestCloseable closeable1 = new TestCloseable("closeable1");
  final TestCloseable closeable2 = new TestCloseable("closeable2");
  final TestCloseable closeable3 = new TestCloseable("closeable3");
  final TestCloseable closeable4 = new TestCloseable("closeable4");

  final Waiter waiter = new Waiter();
  final CountDownLatch futureCancelled = new CountDownLatch(1);
  final Exception exception = new Exception();

  final TestCloseable closeable1 = new TestCloseable("closeable1");
  final TestCloseable closeable2 = new TestCloseable("closeable2");
  final TestCloseable closeable3 = new TestCloseable("closeable3");
  final TestCloseable closeable4 = new TestCloseable("closeable4");

  final Waiter waiter = new Waiter();
  final CountDownLatch futureCancelled = new CountDownLatch(1);
  final Exception exception = new Exception();

              Object value = new Object();
              result.put(key, value);
              // add extra entries
              result.put(value, key);
            }
            return result;
          }
        };
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(loader);

    Object[] lookupKeys = new Object[] {new Object(), new Object(), new Object()};

    // ? extends T
    assertAssignable(new TypeToken<List<N11>>() {}, new TypeToken<List<? extends N1>>() {});
    assertNotAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends N11>>() {});
    assertNotAssignable(new TypeToken<List<Number>>() {}, new TypeToken<List<? extends N11>>() {});

    // ? extends Number
    assertAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends Number>>() {});

              Object value = new Object();
              result.put(key, value);
              // add extra entries
              result.put(value, key);
            }
            return result;
          }
        };
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(loader);

    Object[] lookupKeys = new Object[] {new Object(), new Object(), new Object()};

      @CheckForNull Object p4) {
    if (reference == null) {
      throw new NullPointerException(lenientFormat(errorMessageTemplate, p1, p2, p3, p4));
    }
    return reference;
  }

  /*
   * All recent hotspots (as of 2009) *really* like to have the natural code
   *
   * if (guardExpression) {
   *    throw new BadException(messageExpression);
   * }
   *

        return new ArrayBlockingQueue<>(capacity, fair, c);
    }

    /**
     * {@link ArrayDeque}の新しいインスタンスを作成して返します。
     *
     * @param <E>
     *            {@link ArrayDeque}の要素型
     * @return {@link ArrayDeque}の新しいインスタンス
     * @see ArrayDeque#ArrayDeque()
     */
    public static <E> ArrayDeque<E> newArrayDeque() {
        return new ArrayDeque<>();
    }

    /**

        if (interpolatedModel.getParent() != null) {
            StringSearchInterpolator ssi = new StringSearchInterpolator();
            ssi.addValueSource(new MapBasedValueSource(request.getSession().getUserProperties()));
            ssi.addValueSource(new MapBasedValueSource(model.getProperties()));
            ssi.addValueSource(new MapBasedValueSource(request.getSession().getSystemProperties()));
            try {

            // the defined parallism, while making sure the pool will not
            // be exhausted
            //
            return new ThreadPoolExecutor(
                    parallelism, Integer.MAX_VALUE, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>()) {
                final AtomicInteger parked = new AtomicInteger();

                @Override
                public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks)