public IEnumerator TestStartCoroutines()
        {
            GameObject    gameObject = new GameObject();
            TestComponent component  = gameObject.AddComponent <TestComponent>();

            Counter counter = new Counter();

            yield return(component.StartCoroutines(IncreaseCountCoroutine(counter),
                                                   IncreaseCountCoroutine(counter), IncreaseCountCoroutine(counter)));

            Assert.AreEqual(3, counter.count);
        }