assertNextPermutation(newArrayList(2, 3, 4, 1), permutations);
    assertNextPermutation(newArrayList(2, 4, 3, 1), permutations);
    assertNextPermutation(newArrayList(4, 2, 3, 1), permutations);

    assertNextPermutation(newArrayList(4, 2, 1, 3), permutations);
    assertNextPermutation(newArrayList(2, 4, 1, 3), permutations);
    assertNextPermutation(newArrayList(2, 1, 4, 3), permutations);

   *  * A authorization challenge (HTTP 401 and 407) that is satisfied by the [Authenticator].
   *  * A retryable server failure (HTTP 503 with a `Retry-After: 0` response header).
   *  * A misdirected request (HTTP 421) on a coalesced connection.
   */
  open fun isOneShot(): Boolean = false

  /**
   * Returns the SHA-256 hash of this [RequestBody]
   */
  @Throws(IOException::class)
  fun sha256(): ByteString {

    assertNextPermutation(newArrayList(2, 3, 4, 1), permutations);
    assertNextPermutation(newArrayList(2, 4, 3, 1), permutations);
    assertNextPermutation(newArrayList(4, 2, 3, 1), permutations);

    assertNextPermutation(newArrayList(4, 2, 1, 3), permutations);
    assertNextPermutation(newArrayList(2, 4, 1, 3), permutations);
    assertNextPermutation(newArrayList(2, 1, 4, 3), permutations);

      HTTP_MISDIRECTED_REQUEST -> {
        // OkHttp can coalesce HTTP/2 connections even if the domain names are different. See
        // RealConnection.isEligible(). If we attempted this and the server returned HTTP 421, then
        // we can retry on a different connection.
        val requestBody = userResponse.request.body
        if (requestBody != null && requestBody.isOneShot()) {
          return null
        }

                    Arguments.of(new int[0], 4), // size() returns 4 for empty array
                    Arguments.of(new int[] { 1 }, 4 + 2), // size() returns 4 + 2*1
                    Arguments.of(new int[] { 1, 2 }, 4 + 4), // size() returns 4 + 2*2
                    Arguments.of(new int[] { 1, 2, 3, 4, 5 }, 4 + 10) // size() returns 4 + 2*5
            );
        }

            completed.countDown();
          }
        };
    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    ListenableFuture<Integer> future = service.schedule(Callables.returning(42), 1, MILLISECONDS);

    /*
     * Wait not just until the Future's value is set (as in future.get()) but
     * also until ListeningScheduledExecutorService's wrapper task is done

            completed.countDown();
          }
        };
    ListeningScheduledExecutorService service = listeningDecorator(delegate);
    ListenableFuture<Integer> future = service.schedule(Callables.returning(42), 1, MILLISECONDS);

    /*
     * Wait not just until the Future's value is set (as in future.get()) but
     * also until ListeningScheduledExecutorService's wrapper task is done

    X275,
    X276,
    X277,
    X278,
    X279,
    X280,
    X281,
    X282,
    X283,
    X284,
    X285,
    X286,
    X287,
    X288,
    X289,
    X290,
    X291,
    X292,
    X293,
    X294,
    X295,
    X296,
    X297,
    X298,
    X299,
    X300,
    X301,
    X302,
    X303,
    X304,
    X305,
    X306,
    X307,

    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);
    checkInitialCapacity(4, 2, 1);
    checkInitialCapacity(4, 3, 1);
    checkInitialCapacity(4, 4, 1);
    checkInitialCapacity(4, 5, 2);
    checkInitialCapacity(4, 6, 2);
    checkInitialCapacity(4, 7, 2);
    checkInitialCapacity(4, 8, 2);

    checkInitialCapacity(2, 6, 4);
    checkInitialCapacity(2, 7, 4);
    checkInitialCapacity(2, 8, 4);

    checkInitialCapacity(4, 0, 1);
    checkInitialCapacity(4, 1, 1);
    checkInitialCapacity(4, 2, 1);
    checkInitialCapacity(4, 3, 1);
    checkInitialCapacity(4, 4, 1);
    checkInitialCapacity(4, 5, 2);
    checkInitialCapacity(4, 6, 2);
    checkInitialCapacity(4, 7, 2);
    checkInitialCapacity(4, 8, 2);