loadProgress method
Loads the progress from native storage.
Returns a map with 'completed' and 'total' keys.
Implementation
@override
Future<Map<String, int>> loadProgress() async {
final Map<dynamic, dynamic>? result =
await _channel.invokeMethod<Map<dynamic, dynamic>>(
'loadProgress',
);
return {
'completed': result?['completed'] as int? ?? 0,
'total': result?['total'] as int? ?? 0,
};
}