SliverReorderableListState constructor Null safety

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

SliverReorderableListState class

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