private async Task ExecuteItem(ProgressItem item)
        {
            await item.Execute();

            Completed.Add(item);
            if (!string.IsNullOrEmpty(item.Message))
            {
                InError.Add(item);
            }
        }
 private void ClearItems()
 {
     Total.Clear();
     Completed.Clear();
     InError.Clear();
 }