RawScrollbarState<T extends RawScrollbar> constructor Null safety

1. Flutter
2. widgets
3. RawScrollbarState<T extends RawScrollbar>
4. RawScrollbarState constructor

RawScrollbarState class

1. Constructors
2. RawScrollbarState
3. Properties
4. context
5. enableGestures
6. hashCode
7. mounted
8. runtimeType
9. scrollbarPainter
10. showScrollbar
11. widget
12. Methods
13. activate
14. build
15. createTicker
16. deactivate
17. debugFillProperties
18. didChangeDependencies
19. didUpdateWidget
20. dispose
21. getScrollbarDirection
22. handleHover
23. handleHoverExit
24. handleThumbPress
25. handleThumbPressEnd
26. handleThumbPressStart
27. handleThumbPressUpdate
28. initState
29. isPointerOverScrollbar
30. isPointerOverThumb
31. isPointerOverTrack
32. noSuchMethod
33. reassemble
34. setState
35. toDiagnosticsNode
36. toString
37. toStringShort
38. updateScrollbarPainter
39. Operators
40. operator ==