onDataSourceSuccess method
Implementation
@override
Future<bool> onDataSourceSuccess(IDataSource source, Data? list) async {
busy = true;
// save pointer to data source
myDataSource = source;
// mark clean
clean();
// clear items
items.forEach((_, item) => item.dispose());
items.clear();
// set data
data = list ?? Data();
// notify listeners
notifyListeners('list', items);
busy = false;
return true;
}