fetchData method

@override Future<String> fetchData()

Fetches country data.

If jsonData is provided during class instantiation, it will be returned. Otherwise, the data is fetched from the default asset path.

Returns a Future that completes with the country data in a string format.

Implementation

@override
Future<String> fetchData() async {
  if (jsonData != null && jsonData!.isNotEmpty) {
    return jsonData!;
  }

  return rootBundle.loadString(_kAssetPath);
}