BMFTransitPolicy constructor Null safety

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

BMFTransitPolicy enum

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