function method
Implementation
Future<bool> function(String action, String guid) async {
bool b = false;
if (_head!.rows[guid] != null) {
//FormService svc = _head!.rows.where((r) => r.guid == guid).toList()[0];
FormService svc = await getForm(guid);
await svc.function(action: action);
}
return b;
}