* </pre>
   *
   * @throws IllegalArgumentException if there is a loop in the causal chain
   */
  public static Throwable getRootCause(Throwable throwable) {
    // Keep a second pointer that slowly walks the causal chain. If the fast pointer ever catches
    // the slower pointer, then there's a loop.
    Throwable slowPointer = throwable;
    boolean advanceSlowPointer = false;

///

## Await for messages and send messages { #await-for-messages-and-send-messages }

In your WebSocket route you can `await` for messages and send messages.

{* ../../docs_src/websockets_/tutorial001_py310.py hl[48:52] *}

You can receive and send binary, text, and JSON data.

## Try it { #try-it }

      (this as Object).wait(timeoutMillis - nowMillis)
    }

    throw AssertionError("Timed out waiting for response to $url")
  }

  companion object {
    val TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(10)
  }

/**
 * Service provider interface for registering custom {@link Language} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional programming languages
 * beyond the standard ones provided by Maven. Implementations of this interface will be discovered
 * through the Java ServiceLoader mechanism and their provided languages will be available
 * throughout the Maven build process.
 * <p>

/**
 * Service provider interface for registering custom {@link ProjectScope} implementations.
 * <p>
 * This interface allows plugins and extensions to define and register additional project scopes
 * beyond the standard {@link ProjectScope#MAIN} and {@link ProjectScope#TEST} scopes.
 * Implementations of this interface will be discovered through the Java ServiceLoader mechanism

Mais même si vous **renseignez les données** et cliquez sur « Execute », comme l'interface de documentation fonctionne avec **JavaScript**, les cookies ne seront pas envoyés et vous verrez un message **d'erreur** comme si vous n'aviez saisi aucune valeur.

///

## Récapitulatif { #recap }

      sneakyThrow(exception);
    }
  }

  /**
   * Returns a {@link Stream} containing the elements of the first stream, followed by the elements
   * of the second stream, and so on.
   *
   * <p>This is equivalent to {@code Stream.of(streams).flatMap(stream -> stream)}, but the returned
   * stream may perform better.
   *
   * @see Stream#concat(Stream, Stream)
   */

        Map<String, Object> dataMap = new HashMap<>();

        // First addition
        transformer.putResultDataBody(dataMap, "tags", "tag1");

        // Second addition with array
        String[] tags2 = new String[] { "tag2", "tag3" };
        transformer.putResultDataBody(dataMap, "tags", tags2);

        // Third addition with another array

    Serialization.writeMultiset(this, stream);
  }

  /**
   * @serialData the {@code Class<E>} for the enum type, the number of distinct elements, the first
   *     element, its count, the second element, its count, and so on
   */
  @GwtIncompatible // java.io.ObjectInputStream
  private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
    stream.defaultReadObject();

    //    were added to the queue. It's easily possible for one thread to take the head of the
    //    queue, immediately followed by another thread taking the next element in the queue. That
    //    second thread can then dispatch to the subscriber it took before the first thread does.
    //
    // All this makes me really wonder if there's any value in queueing here at all. A dispatcher