ClipContext constructor Null safety

1. Flutter
2. painting
3. ClipContext
4. ClipContext constructor

ClipContext class

1. Constructors
2. ClipContext
3. Properties
4. canvas
5. hashCode
6. runtimeType
7. Methods
8. clipPathAndPaint
9. clipRectAndPaint
10. clipRRectAndPaint
11. noSuchMethod
12. toString
13. Operators
14. operator ==