getNameFolder method Null safety

Future<String> getNameFolder(
  1. {String? widowsFolder}
)

takes folder name as app name for Android and iOS for Windows pass the name in the paramwidowsFolder

Implementation

Future<String> getNameFolder({String? widowsFolder}) async {
  try {
    if (Platform.isWindows)
      return widowsFolder ?? "app_folder";
    else
      return await methodChannel.invokeMethod("getNameFolder", widowsFolder);
  } on PlatformException catch (e) {
    throw OpenDocumentException('getNameFolder: ${e.stacktrace.toString()}');
  }
}