op = strings.Replace(op, "-fm", "", 1)
	return op
}

// If trace is enabled, execute the request if it is traced by other handlers
// otherwise, generate a trace event with request information but no response.
func httpTracerMiddleware(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

	// disk is replaced and formatted.
	SetDiskID(id string)

	// Returns healing information for a newly replaced disk,
	// returns 'nil' once healing is complete or if the disk
	// has never been replaced.
	Healing() *healingTracker
	DiskInfo(ctx context.Context, opts DiskInfoOptions) (info DiskInfo, err error)

      delegate.test();
    }
    return this;
  }

  private void testItems() {
    for (T item : items) {
      /*
       * TODO(cpovirk): consider no longer running these equivalent() tests on every Equivalence,
       * since the Equivalence base type now implements this logic itself
       */
      assertTrue(item + " must be inequivalent to null", !equivalence.equivalent(item, null));

   *   <li>{@linkplain LoadingCache#getAll bulk loading requests}, including {@linkplain
   *       CacheLoader#loadAll bulk loading implementations}
   * </ul>
   *
   * <p><b>Warning:</b> For any given key, every {@code loader} used with it should compute the same
   * value. Otherwise, a call that passes one {@code loader} may return the result of another call

	if err != nil {
		return err
	}

	*b = BatchJobNotification(tmp)
	b.line, b.col = val.Line, val.Column
	return nil
}

// BatchJobRetry stores retry configuration used in the event of failures.
type BatchJobRetry struct {
	line, col int
	Attempts  int           `yaml:"attempts" json:"attempts"` // number of retry attempts

Mas antes disso, controlar código assíncrono era bem mais complexo e difícil.

Nas versões anteriores do Python, você poderia utilizar threads ou <a href="http://www.gevent.org/" class="external-link" target="_blank">Gevent</a>. Mas o código é bem mais complexo de entender, debugar, e pensar sobre.

Nas versões anteriores do NodeJS / Navegador JavaScript, você utilizaria "callbacks". O que leva ao "inferno do callback".

    
    private final int version;
    
    WitnessVersion(int version) {
        this.version = version;
    }
    
    public int getValue() { return version; }
}
```

### 3.2 Witness Event Types
```java
public enum WitnessEventType {
    RESOURCE_CHANGE(1),        // Resource state changed
    CLIENT_MOVE(2),           // Client should move to different node

ort getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n...

    }
    server
      .url("/b")
      .toUrl()
      .openConnection()
      .getInputStream() // Should succeed.
  }

  /**
   * Throttle the request body by sleeping 500ms after every 3 bytes. With a 6-byte request, this
   * should yield one sleep for a total delay of 500ms.
   */
  @Test
  fun throttleRequest() {
    assumeNotWindows()
    server.enqueue(
      MockResponse()

// scanning lines, a [SplitFunc] can return (0, nil, nil) to signal the
// [Scanner] to read more data into the slice and try again with a
// longer slice starting at the same point in the input.
//
// The function is never called with an empty data slice unless atEOF
// is true. If atEOF is true, however, data may be non-empty and,
// as always, holds unprocessed text.
type SplitFunc func(data []byte, atEOF bool) (advance int, token []byte, err error)