listener = new MockFutureListener(resultFuture);
  }

  public void testFutureGetBeforeCallback() throws Exception {
    // Verify that get throws a timeout exception before the callback is called.
    assertThrows(TimeoutException.class, () -> resultFuture.get(1L, MILLISECONDS));
  }

  public void testFutureGetThrowsWrappedException() throws Exception {
    inputFuture.setException(EXCEPTION);

            }
        };
        ComponentUtil.register(factory, "webApiManagerFactory");

        // Execute
        webApiFilter.doFilter(request, response, chain);

        // Verify manager was called and chain was not called directly
        assertTrue(managerCalled.get());
        assertFalse(chainCalled.get());
    }

    // Test doFilter with ServletRequest and ServletResponse (not HTTP variants)
    @Test

 *
 * <p>{@link #processLine} will be called for each line that is read, and should return {@code
 * false} when you want to stop processing.
 *
 * @author Miles Barr
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public interface LineProcessor<T extends @Nullable Object> {

  /**
   * This method will be called once for each line.
   *

Davor war der Umgang mit asynchronem Code jedoch deutlich komplexer und schwieriger.

In früheren Versionen von Python hätten Sie Threads oder [Gevent](https://www.gevent.org/) verwenden können. Der Code ist jedoch viel komplexer zu verstehen, zu debuggen und nachzuvollziehen.

In früheren Versionen von NodeJS / Browser JavaScript hätten Sie „Callbacks“ verwendet. Was zur „Callback-Hölle“ führt.

## Coroutinen { #coroutines }

//
// Buffer panics if it is called after scanning has started.
func (s *Scanner) Buffer(buf []byte, max int) {
	if s.scanCalled {
		panic("Buffer called after Scan")
	}
	s.buf = buf[0:cap(buf)]
	s.maxTokenSize = max
}

// Split sets the split function for the [Scanner].
// The default split function is [ScanLines].
//
// Split panics if it is called after scanning has started.

import okio.IOException

interface Callback {
  /**
   * Called when the request could not be executed due to cancellation, a connectivity problem or
   * timeout. Because networks can fail during an exchange, it is possible that the remote server
   * accepted the request before the failure.
   */
  fun onFailure(
    call: Call,
    e: IOException,
  )

  /**

Damit wird auch vermieden, neue Entwickler möglicherweise zu verwirren, die einen nicht verwendeten Parameter in Ihrem Code sehen und ihn für unnötig halten könnten.

///

/// info | Info

In diesem Beispiel verwenden wir zwei erfundene benutzerdefinierte Header `X-Key` und `X-Token`.

      assertEquals(method, calledMethod);
      assertEquals(method + " invoked more than once.", 0, called.get());
      for (int i = 0; i < passedArgs.length; i++) {
        assertEquals(
            "Parameter #" + i + " of " + method + " not forwarded", passedArgs[i], args[i]);
      }
      called.getAndIncrement();
      return returnValue;
    }

                return existingInfo;
            }

            @Override
            public void store(CrawlingInfo entity) {
                // Should not be called for existing info
                fail("Store should not be called for existing info");
            }

            @Override
            public void storeInfo(List<CrawlingInfoParam> crawlingInfoParamList) {

                Arguments.of(NbtException.ERR_SSN_SRVC, NbtException.NOT_LISTENING_CALLING, "ERR_SSN_SRVC/Not listening for calling name"),
                Arguments.of(NbtException.ERR_SSN_SRVC, NbtException.CALLED_NOT_PRESENT, "ERR_SSN_SRVC/Called name not present"),
                Arguments.of(NbtException.ERR_SSN_SRVC, NbtException.NO_RESOURCES,