generate method
Implementation
Future<({String path, Map<String, Map<String, String>> map})>
generate() async {
var result = await _readPaths(path);
File file = File(joinPaths([path, 'language_dart.g.dart']));
await file.writeAsString(
"var languageDart = ${result.dart};",
flush: true,
);
return (path: file.path, map: result.map);
}