SliverPhysicalContainerParentData constructor Null safety

1. Flutter
2. rendering
3. SliverPhysicalContainerParentData
4. SliverPhysicalContainerParentData constructor

SliverPhysicalContainerParentData class

1. Constructors
2. SliverPhysicalContainerParentData
3. Properties
4. hashCode
5. nextSibling
6. paintOffset
7. previousSibling
8. runtimeType
9. Methods
10. applyPaintTransform
11. detach
12. noSuchMethod
13. toString
14. Operators
15. operator ==