BMFDrivingPolicy constructor Null safety

1. flutter_baidu_mapapi_search
2. flutter_baidu_mapapi_search
3. BMFDrivingPolicy
4. BMFDrivingPolicy const constructor

BMFDrivingPolicy enum

1. Constructors
2. BMFDrivingPolicy
3. Values
4. BLK_FIRST
5. TIME_FIRST
6. DIS_FIRST
7. FEE_FIRST
8. Properties
9. hashCode
10. index
11. runtimeType
12. Methods
13. noSuchMethod
14. toString
15. Operators
16. operator ==
17. Constants
18. values