using System;

using System.IO;

using System.Threading.Tasks;

using System.Xml.Serialization;

using System.Text;

​

namespace Test

{

    public class Program

    {

        public static void Main()

        {

            var obj = new SomeClass(new Service());

            obj.GetTheUser();

        }

    }

    public class SomeClass

    {

        private readonly Service _service;

        public SomeClass(Service service)

        {

            _service = service;

        }

        public async void GetTheUser()

        {

            var stream = new MemoryStream(Encoding.ASCII.GetBytes(""));

            Console.WriteLine("Getting the user");

            var user = await _service.DeserializeAsync<User>(new StreamReader(stream));

            Console.WriteLine(user?.Name);

        }

    }

    public class Service 

    {

        public async Task<T> DeserializeAsync<T>(TextReader reader)

        {

            try

            {

                return await Task.Run(() =>

                {

                    Console.WriteLine("start deserialization");

                    var result = new XmlSerializer(typeof(T)).Deserialize(reader);

                    Console.WriteLine("Can never get here");

                    return (T) result;

                });

            }

            catch (Exception e)

            {

                Console.WriteLine($"Exception caught: {e.Message}");

            }

​

            return default(T);

        }

    }

​

    public class User 

    {

        public string Name {get;set;}

        public int Age {get;set;}

    }

}