int returnValue = 0;
    for (int i = 0; i < reps; i++) {
      list = impl.newExecutionList();
      listenerLatch = new CountDownLatch(numListeners);
      for (int j = 0; j < numListeners; j++) {
        list.add(listener, directExecutor());
        returnValue += listenerLatch.getCount();
      }
      list.execute();
      returnValue += listenerLatch.getCount();
    }

    int returnValue = 0;
    for (int i = 0; i < reps; i++) {
      list = impl.newExecutionList();
      listenerLatch = new CountDownLatch(numListeners);
      for (int j = 0; j < numListeners; j++) {
        list.add(listener, directExecutor());
        returnValue += listenerLatch.getCount();
      }
      list.execute();
      returnValue += listenerLatch.getCount();
    }

    private final @Nullable Object[] passedArgs;
    private final @Nullable Object returnValue;
    private final AtomicInteger called = new AtomicInteger();

    InteractionTester(Class<T> interfaceType, Method method) {
      this.interfaceType = interfaceType;
      this.method = method;
      this.passedArgs = getParameterValues(method);
      this.returnValue = new FreshValueGenerator().generateFresh(method.getReturnType());
    }

    private final @Nullable Object[] passedArgs;
    private final @Nullable Object returnValue;
    private final AtomicInteger called = new AtomicInteger();

    InteractionTester(Class<T> interfaceType, Method method) {
      this.interfaceType = interfaceType;
      this.method = method;
      this.passedArgs = getParameterValues(method);
      this.returnValue = new FreshValueGenerator().generateFresh(method.getReturnType());
    }

          }

          private Object invokeListMethod(Method method, Object[] args) throws Throwable {
            try {
              Object returnValue = method.invoke(delegate, args);
              mutateDelegate();
              return returnValue;
            } catch (InvocationTargetException e) {
              throw e.getCause();
            } catch (IllegalAccessException e) {

      values.add(null);
    }

    this.values = values;
  }

  @Override
  final void collectOneValue(int index, @ParametricNullness V returnValue) {
    List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      localValues.set(index, new Present<>(returnValue));
    }
  }

  @Override
  final void handleAllCompleted() {
    List<@Nullable Present<V>> localValues = values;

          }

          private Object invokeListMethod(Method method, Object[] args) throws Throwable {
            try {
              Object returnValue = method.invoke(delegate, args);
              mutateDelegate();
              return returnValue;
            } catch (InvocationTargetException e) {
              throw e.getCause();
            } catch (IllegalAccessException e) {

    super(futures, allMustSucceed, false);
    this.task = new CallableInterruptibleTask(callable, listenerExecutor);
    init();
  }

  @Override
  void collectOneValue(int index, @CheckForNull Object returnValue) {}

  @Override
  void handleAllCompleted() {
    CombinedFutureInterruptibleTask<?> localTask = task;
    if (localTask != null) {
      localTask.execute();
    }
  }

  @Override

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**