*  **Canceling batches of calls is now the application's responsibility.**
    The API to cancel calls by tag has been removed and replaced with a more
    general mechanism. The dispatcher now exposes all in-flight calls via its
    `runningCalls()` and `queuedCalls()` methods. You can write code that
    selects calls by tag, host, or whatever, and invokes `Call.cancel()` on the
    ones that are no longer necessary.

 *  Fix: Attempt to read the response body even if the server canceled the request. This will cause
    some calls to return nice error codes like `HTTP/1.1 429 Too Many Requests` instead of transport
    errors like `SocketException: Connection reset` and `StreamResetException: stream was reset:
    CANCEL`.
 *  New: Support OSGi metadata.
 *  Upgrade: [Okio 2.9.0][okio_2_9_0].

    ```kotlin

  }

  @Test fun cancelAllWhenEmptyDoesNotStartWorkerThread() {
    redQueue.execute("red task", 100.µs) {
      error("expected to be canceled")
    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    blueQueue.execute("task", 100.µs) {
      error("expected to be canceled")
    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    redQueue.cancelAll()

		r.readCond = sync.NewCond(&r.mu)
		r.writeCond = sync.NewCond(&r.mu)
	}
	return r
}

// WithCancel sets a context to cancel the ring buffer.
// When the context is canceled, the ring buffer will be closed with the context error.
// A goroutine will be started and run until the provided context is canceled.
func (r *RingBuffer) WithCancel(ctx context.Context) *RingBuffer {
	go func() {
		<-ctx.Done()
		r.CloseWithError(ctx.Err())
	}()

pkg math/big, method (*Int) Text(int) string
pkg math/rand, func Read([]uint8) (int, error)
pkg math/rand, method (*Rand) Read([]uint8) (int, error)
pkg net, type DNSError struct, IsTemporary bool
pkg net, type Dialer struct, Cancel <-chan struct
pkg net/http, const MethodConnect = "CONNECT"
pkg net/http, const MethodConnect ideal-string
pkg net/http, const MethodDelete = "DELETE"
pkg net/http, const MethodDelete ideal-string

    // Play it back.
    connect(peer, PushObserver.CANCEL, Http2Connection.Listener.REFUSE_INCOMING_STREAMS)

    // Verify the peer received what was expected.
    val rstStream = peer.takeFrame()
    assertThat(rstStream.type).isEqualTo(Http2.TYPE_RST_STREAM)
    assertThat(rstStream.streamId).isEqualTo(2)
    assertThat(rstStream.errorCode).isEqualTo(ErrorCode.CANCEL)
  }

  /**

   * structure is not necessarily related to the processing format.
   *
   * @since 8.0
   */
  public static final byte ETB = 23;

  /**
   * Cancel: A control character used to indicate that the data with which it is sent is in error or
   * is to be disregarded.
   *
   * @since 8.0
   */
  public static final byte CAN = 24;

  /**

                        }
                    }
                }
            }
        } catch (final CrawlerSystemException e) {
            httpGet.cancel();
            throw e;
        } catch (final Exception e) {
            httpGet.cancel();
            throw new CrawlingAccessException("Could not process " + robotTxtUrl + ". ", e);
        } finally {
            try {

    assertFailed(future, cause);
  }

  public void testCanceled() throws Exception {
    assertThat(future.cancel(false /* mayInterruptIfRunning */)).isTrue();
    assertCancelled(future, false);
  }

  public void testInterrupted() throws Exception {
    assertThat(future.cancel(true /* mayInterruptIfRunning */)).isTrue();
    assertCancelled(future, true);
  }

    
    public void stopWatching(String directoryPath) {
        ChangeNotificationHandle handle = activeWatchers.remove(directoryPath);
        if (handle != null) {
            handle.active = false;
            // Cancel any pending notifications
            cancelNotification(handle);
        }
    }
    
    private void startAsyncNotification(ChangeNotificationHandle handle) {
        CompletableFuture.runAsync(() -> {