protected SettableFuture<Integer> inputFuture;
  protected ListenableFuture<T> resultFuture;
  protected MockFutureListener listener;

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    inputFuture = SettableFuture.create();
    resultFuture = buildChainingFuture(inputFuture);
    listener = new MockFutureListener(resultFuture);
  }

  public void testFutureGetBeforeCallback() throws Exception {

    void call(L listener);
  }

  /**
   * Adds a listener that will be called using the given executor when events are later {@link
   * #enqueue enqueued} and {@link #dispatch dispatched}.
   */
  public void addListener(L listener, Executor executor) {
    checkNotNull(listener, "listener");
    checkNotNull(executor, "executor");
    listeners.add(new PerListenerQueue<>(listener, executor));
  }

  /**

    final ClassMetaDataRepository<ClassMetaData> repository = Mock()
    final GenerationListener listener = Mock()
    final JavadocLinkConverter converter = new JavadocLinkConverter(document, nameResolver, linkRenderer, repository)

    def convertsClassNameToLink() {
        when:
        def link = converter.resolve('someName', classMetaData, listener)

        then:
        format(link) == '<someLinkElement/>'

      queue.enqueue(incrementingEvent(counters, listener, 2));
      queue.enqueue(incrementingEvent(counters, listener, 3));
      queue.enqueue(incrementingEvent(counters, listener, 4));
      queue.enqueue(countDownEvent(latch));
      assertEquals(0, counters.size());
      queue.dispatch();
      latch.await();
      assertEquals(multiset(listener, 4), counters);
    } finally {

    private final GenerationListener listener = new DefaultGenerationListener();

    public ClassDocBuilder(DslDocModel model, JavadocConverter javadocConverter) {
        commentBuilder = new ClassDocCommentBuilder(javadocConverter, listener);
        propertiesBuilder = new ClassDocPropertiesBuilder(javadocConverter, listener);
        methodsBuilder = new ClassDocMethodsBuilder(javadocConverter, listener);

        for (ProjectExecutionListener listener : listeners) {
            listener.beforeProjectExecution(event);
        }
    }

    @Override
    public void beforeProjectLifecycleExecution(ProjectExecutionEvent event) throws LifecycleExecutionException {
        for (ProjectExecutionListener listener : listeners) {
            listener.beforeProjectLifecycleExecution(event);
        }
    }

    return EventSource.Factory { request, listener ->
      val actualRequest =
        if (request.header("Accept") == null) {
          request.newBuilder().addHeader("Accept", "text/event-stream").build()
        } else {
          request
        }

      RealEventSource(actualRequest, listener).apply {
        connect(callFactory)
      }
    }
  }

  @JvmStatic

                    listener.sessionStarted(event);
                    break;
                case SessionEnded:
                    listener.sessionEnded(event);
                    break;

                case ProjectSkipped:
                    listener.projectSkipped(event);
                    break;
                case ProjectStarted:
                    listener.projectStarted(event);
                    break;

        for (MojoExecutionListener listener : listeners) {
            listener.afterExecutionFailure(event);
        }
    }

    public void addMojoExecutionListener(MojoExecutionListener listener) {
        this.listeners.add(listener);
    }

    public void removeMojoExecutionListener(MojoExecutionListener listener) {
        this.listeners.remove(listener);
    }

        ).setHeader("content-type", "text/event-stream")
        .build(),
    )
    val source = newEventSource()
    assertThat(source.request().url.encodedPath).isEqualTo("/")
    listener.assertOpen()
    listener.assertEvent(null, null, "hey")
    listener.assertClose()
  }

  @RetryingTest(5)
  fun cancelInEventShortCircuits() {
    server.enqueue(
      MockResponse.Builder()
        .body(
          """