ViewAnnotationAnchor constructor Null safety

1. mapbox_maps
2. mapbox_maps
3. ViewAnnotationAnchor
4. ViewAnnotationAnchor const constructor

ViewAnnotationAnchor enum

1. Constructors
2. ViewAnnotationAnchor
3. Values
4. TOP
5. LEFT
6. BOTTOM
7. RIGHT
8. TOP_LEFT
9. BOTTOM_RIGHT
10. TOP_RIGHT
11. BOTTOM_LEFT
12. CENTER
13. Properties
14. hashCode
15. index
16. runtimeType
17. Methods
18. noSuchMethod
19. toString
20. Operators
21. operator ==
22. Constants
23. values