onCloseAssetsPicker method
close picker and return selected AssetModels to the caller
Implementation
Future<void> onCloseAssetsPicker() async {
final List<AssetModel> assets = List.from(dataStore.selectedAssets.value);
unawaited(dataStore.pickerController.hide());
dataStore.mainAssetsCompleter.complete(assets);
dataStore.selectedAssets.value.clear();
dataStore.availablePath.value.clear();
}