UserController constructor Null safety

1. irte_engine
2. user_controller
3. UserController
4. UserController constructor

UserController class

1. Constructors
2. UserController
3. Properties
4. currentUser
5. hashCode
6. hasListeners
7. initialized
8. isClosed
9. item
10. listeners
11. model
12. onDelete
13. onStart
14. runtimeType
15. storage
16. Methods
17. $configureLifeCycle
18. addListener
19. addListenerId
20. clearStorage
21. dispose
22. disposeId
23. handleStoredModel
24. loadUser
25. noSuchMethod
26. notifyChildrens
27. onClose
28. onInit
29. onReady
30. refresh
31. refreshGroup
32. registerUser
33. removeListener
34. removeListenerId
35. removeUser
36. toString
37. update
38. updateUser
39. Operators
40. operator ==
41. Static properties
42. instance