ResponseErrorReason constructor Null safety

1. mapbox_maps_flutter
2. mapbox_maps_flutter
3. ResponseErrorReason
4. ResponseErrorReason const constructor

ResponseErrorReason enum

1. Constructors
2. ResponseErrorReason
3. Values
4. NOT_FOUND
5. SERVER
6. CONNECTION
7. RATE_LIMIT
8. OTHER
9. Properties
10. hashCode
11. index
12. runtimeType
13. Methods
14. noSuchMethod
15. toString
16. Operators
17. operator ==
18. Constants
19. values