It is better to omit

[calcitem]

 @override
  void initState() {
    super.initState();

    if (visitedRuleSettingsPage == true) {
      MillController().reset();
      visitedRuleSettingsPage = false;
    }

    MillController().isReady == false;

    // TODO: [calcitem] It is better to omit.
    MillController().engine.startup();