updateGroup method
Implementation
Future<(bool, String?)> updateGroup(PersonGroup group) async {
  var response = await _bridge.invokeMethod(
    "updateGroup",
    [group.toJson()],
  );
  return _successResponseFromJson(response);
}Future<(bool, String?)> updateGroup(PersonGroup group) async {
  var response = await _bridge.invokeMethod(
    "updateGroup",
    [group.toJson()],
  );
  return _successResponseFromJson(response);
}