private async void InitializeCollections()
        {
            if (!_fInitialized)
            {
                await _devices.Attach(_dm.Devices);

                _fInitialized = true;
            }
        }
        private async void InitializeCollections()
        {
            if (!_fInitialized)
            {
                await _boards.Attach(_boardsSource);

                PopulateBoards();
                await _images.Attach(_imagesSource);

                PopulateImages();

                _fInitialized = true;
            }
        }