DrawerControllerState constructor Null safety

1. Flutter
2. material
3. DrawerControllerState
4. DrawerControllerState constructor

DrawerControllerState class

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