BorderRadius class

1. Constructors
2. all
3. circular
4. horizontal
5. only
6. vertical
7. Properties
8. bottomLeft
9. bottomRight
10. topLeft
11. topRight
12. hashCode
13. runtimeType
14. Methods
15. add
16. resolve
17. subtract
18. toRRect
19. noSuchMethod
20. toString
21. Operators
22. operator %
23. operator *
24. operator +
25. operator -
26. operator /
27. operator unary-
28. operator ~/
29. operator ==
30. Static methods
31. lerp
32. Constants
33. zero