child method
Implementation
@override
Future<SafDocumentFile?> child(String uri, List<String> names) async {
if (names.isEmpty) {
throw ArgumentError('names must not be empty');
}
final map = await methodChannel.invokeMapMethod<String, dynamic>(
'child',
{'uri': uri, 'names': names},
);
if (map == null) {
return null;
}
return SafDocumentFile.fromMap(map);
}