* thread. That is, all subscribers to a single event A will be called before any subscribers to
   * any events B and C that are posted to the event bus by the subscribers to A.
   */
  static Dispatcher perThreadDispatchQueue() {
    return new PerThreadQueuedDispatcher();
  }

  /**
   * Returns a dispatcher that queues events that are posted in a single global queue. This behavior

   *     identifier.
   */
  public EventBus(String identifier) {
    this(
        identifier, directExecutor(), Dispatcher.perThreadDispatchQueue(), LoggingHandler.INSTANCE);
  }

  /**
   * Creates a new EventBus with the given {@link SubscriberExceptionHandler}.
   *
   * @param exceptionHandler Handler for subscriber exceptions.