private static final class TimedPutQueue {
    final BlockingQueue<String> queue;
    final Completion completed;

    /**
     * Creates a {@link EnableWrites} which open up a spot for a {@code put} to succeed in {@code
     * countdownInMillis}.
     */
    static TimedPutQueue createWithDelay(long countdownInMillis) {
      return new TimedPutQueue(countdownInMillis);
    }

    final class Task implements Runnable {
      @Override
      public void run() {
        lock.lock();
        try {
          /*
           * requireNonNull is safe because Task isn't run (or at least it doesn't succeed in taking
           * the lock) until after it's scheduled and the runningTask field is set.
           */
          if (requireNonNull(runningTask).isCancelled()) {

          assertTrue(expectedSuccess);
        } catch (ArithmeticException e) {
          if (expectedSuccess) {
            failFormat(
                "expected divide(%s, %s, UNNECESSARY) to succeed; got ArithmeticException", p, q);
          }
        }
      }
    }
  }

  @GwtIncompatible // TODO
  public void testZeroDivIsAlwaysZero() {
    for (long q : NONZERO_LONG_CANDIDATES) {

            }

            startLatch.countDown();
            executor.shutdown();
            assertTrue(executor.awaitTermination(5, TimeUnit.SECONDS));

            // Some operations might succeed before key wipe, some might fail after
            // At minimum, we expect some activity (not all operations should be no-ops)
            int totalOperations = successCount.get() + failureCount.get();

      }
    }
  }

  /*
   * This next part consists of several sample classes that provide
   * demonstrations of conditions that cause NullPointerTester
   * to succeed/fail.
   */

  /** Lots of well-behaved methods. */
  @SuppressWarnings("unused") // used by reflection
  private static class PassObject extends SomeClassThatDoesNotUseNullable {
    @Keep

    checkArgument(
        bytes.length == 4,
        "Byte array has invalid length for an IPv4 address: %s != 4.",
        bytes.length);

    // Given a 4-byte array, this cast should always succeed.
    return (Inet4Address) bytesToInetAddress(bytes, null);
  }

  /**
   * Returns the {@link InetAddress} having the given string representation.
   *

}

// Discard skips the next n bytes, returning the number of bytes discarded.
//
// If Discard skips fewer than n bytes, it also returns an error.
// If 0 <= n <= b.Buffered(), Discard is guaranteed to succeed without
// reading from the underlying io.Reader.
func (b *Reader) Discard(n int) (discarded int, err error) {
	if n < 0 {
		return 0, ErrNegativeCount
	}
	if n == 0 {
		return
	}

	tmpPart := fmt.Sprintf("%sx%d", mustGetUUID(), time.Now().UnixNano())
	tmpPartPath := pathJoin(tmpPart, partSuffix)

	// Delete the temporary object part. If PutObjectPart succeeds there would be nothing to delete.
	defer func() {
		if countOnlineDisks(onlineDisks) != len(onlineDisks) {
			er.deleteAll(context.Background(), minioMetaTmpBucket, tmpPart)
		}
	}()

    checkArgument(
        bytes.length == 4,
        "Byte array has invalid length for an IPv4 address: %s != 4.",
        bytes.length);

    // Given a 4-byte array, this cast should always succeed.
    return (Inet4Address) bytesToInetAddress(bytes, null);
  }

  /**
   * Returns the {@link InetAddress} having the given string representation.
   *

		if _, ok := err.(BucketExists); ok {
			// Though bucket exists locally, we send the site-replication
			// hook to ensure all sites have this bucket. If the hook
			// succeeds, the client will still receive a bucket exists
			// message.
			globalSiteReplicationSys.MakeBucketHook(ctx, bucket, opts)
		}
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}