response property Null safety

1. mapbox_maps
2. mapbox_maps
3. ResourceEventData
4. response property

ResourceEventData class

1. Constructors
2. fromJson
3. Properties
4. begin
5. cancelled
6. dataSource
7. end
8. hashCode
9. request
10. response
11. runtimeType
12. Methods
13. noSuchMethod
14. toString
15. Operators
16. operator ==