private static async Task Main(string[] args)
        {
            try
            {
                await Exception();
            }
            catch(Exception)
            {

            }
        }

        public static async Task Exception()
        {
            var longTask = LongTask();
            var shortTask = Task.Delay(3000);

            if (await Task.WhenAny(longTask, shortTask) == shortTask)
            {
                throw new ShortException();
            }
        }

        public static async Task LongTask()
        {
            await Task.Delay(6000);
            throw new LongException();
        }

        public class ShortException : Exception {}
        public class LongException : Exception {}