public static void AddModelErrors(this CloudException ex, ModelStateDictionary modelState)
        {
            var errors = ex.ToFriendlyString(false);
            var lines  = errors.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);

            foreach (var line in lines)
            {
                modelState.AddModelError("", line);
            }
        }