public IEnumerable <string> Get()
        {
            var tt = _ApplicationUserAccesor.Get();

            tt.FirstName = "asdadas";

            return(new string[] { "value1", "value2" });
        }
        public IActionResult Get(int id)
        {
            var tt = _applicationUserAccesor.Get();

            tt.FirstName = "asdadas";

            Customer result = _IUnitOfWork.Customer.GetByID(id);

            if (result == null)
            {
                return(NotFound("Klient nie istnieje w bazie danych"));
            }

            return(Ok(_mapper.Map <Customer, CustomerViewModel>(result)));
        }