public async Task AmbientState()
        {
            var classWithAmbientState = new ClassWithAmbientState();

            var tasks = new Task[3];

            for (int i = 0; i < 3; i++)
            {
                tasks[i] = ((Func <Task>)(async() =>
                {
                    classWithAmbientState.Do();
                    await Task.Delay(200).ConfigureAwait(false);
                    classWithAmbientState.Do();
                }))();
            }

            await Task.WhenAll(tasks);
        }
        public async Task AmbientState()
        {
            var classWithAmbientState = new ClassWithAmbientState();

            var tasks = new Task[3];

            for (int i = 0; i < 3; i++)
            {
                tasks[i] = Task.Run(() =>
                {
                    classWithAmbientState.Do();
                    Thread.Sleep(200);
                    classWithAmbientState.Do();
                });
            }

            await Task.WhenAll(tasks);
        }