runAsync method
Implementation
@override
Future<void> runAsync(String label, List<String> args) async {
final actions = <String, _RoleAction>{
'list': _list,
'show': _show,
'create': _create,
'delete': _delete,
'rename': _rename,
'priority': _setPriority,
'permission': _permission,
};
final action = args.firstOrNull ?? 'list';
final handler = actions[action];
if (handler == null) throw const CommandUsageException();
await handler(args.isEmpty ? [] : args.sublist(1));
}