ObstructingPreferredSizeWidget constructor Null safety

1. Flutter
2. cupertino
3. ObstructingPreferredSizeWidget
4. ObstructingPreferredSizeWidget constructor

ObstructingPreferredSizeWidget class

1. Constructors
2. ObstructingPreferredSizeWidget
3. Properties
4. hashCode
5. key
6. preferredSize
7. runtimeType
8. Methods
9. createElement
10. debugDescribeChildren
11. debugFillProperties
12. noSuchMethod
13. shouldFullyObstruct
14. toDiagnosticsNode
15. toString
16. toStringDeep
17. toStringShallow
18. toStringShort
19. Operators
20. operator ==