shape property Null safety

1. Flutter
2. material
3. ListTileThemeData
4. shape property

ListTileThemeData class

1. Constructors
2. ListTileThemeData
3. Properties
4. contentPadding
5. dense
6. enableFeedback
7. hashCode
8. horizontalTitleGap
9. iconColor
10. minLeadingWidth
11. minVerticalPadding
12. mouseCursor
13. runtimeType
14. selectedColor
15. selectedTileColor
16. shape
17. style
18. textColor
19. tileColor
20. visualDensity
21. Methods
22. copyWith
23. debugFillProperties
24. noSuchMethod
25. toDiagnosticsNode
26. toString
27. toStringShort
28. Operators
29. operator ==
30. Static methods
31. lerp