private async void ArchiveTasks()
        {
            try
            {
                _taskFileService.LoadingState = TaskLoadingState.Syncing;

                await _archiveFileService.Sync();

                // TODO Have setting for preserving line numbers
                var completedTasks = _taskFileService.TaskList.RemoveCompletedTasks(false);

                foreach (var completedTask in completedTasks)
                {
                    _archiveFileService.TaskList.Add(completedTask);
                }

                _archiveFileService.SaveTasks();
                _taskFileService.SaveTasks();

                await _archiveFileService.Sync();

                await _taskFileService.Sync();

                Debug.WriteLine($">>>>> MainViewModel ArchiveTasks 257: {LocalHasChanges}");
            }
            catch (Exception ex)
            {
                Messenger.Default.Send(new ArchiveErrorMessage(ex));
            }
            finally
            {
                _taskFileService.LoadingState = TaskLoadingState.Ready;
            }
        }
        private void RemoveSelectedTasks()
        {
            if (_selectedTasks.Count == 0)
            {
                return;
            }

            _workingWithSelectedTasks = true;

            foreach (var task in _selectedTasks)
            {
                if (task != null)
                {
                    TaskList.Delete(task);
                }
            }

            _selectedTasks.Clear();

            _taskFileService.SaveTasks();

            _workingWithSelectedTasks = false;
        }