ScrollNotificationObserverState constructor Null safety

1. Flutter
2. widgets
3. ScrollNotificationObserverState
4. ScrollNotificationObserverState constructor

ScrollNotificationObserverState class

1. Constructors
2. ScrollNotificationObserverState
3. Properties
4. context
5. hashCode
6. mounted
7. runtimeType
8. widget
9. Methods
10. activate
11. addListener
12. build
13. deactivate
14. debugFillProperties
15. didChangeDependencies
16. didUpdateWidget
17. dispose
18. initState
19. noSuchMethod
20. reassemble
21. removeListener
22. setState
23. toDiagnosticsNode
24. toString
25. toStringShort
26. Operators
27. operator ==