AppSettingsController constructor Null safety

1. irte_engine
2. app_settings_controller
3. AppSettingsController
4. AppSettingsController constructor

AppSettingsController class

1. Constructors
2. AppSettingsController
3. Properties
4. hashCode
5. hasListeners
6. initialized
7. isClosed
8. listeners
9. onDelete
10. onStart
11. runtimeType
12. settings
13. Methods
14. $configureLifeCycle
15. addListener
16. addListenerId
17. dispose
18. disposeId
19. noSuchMethod
20. notifyChildrens
21. onClose
22. onInit
23. onReady
24. refresh
25. refreshGroup
26. removeListener
27. removeListenerId
28. toString
29. update
30. Operators
31. operator ==