BMFMapUtilsVersion constructor Null safety

1. flutter_baidu_mapapi_utils
2. flutter_baidu_mapapi_utils
3. BMFMapUtilsVersion
4. BMFMapUtilsVersion constructor

BMFMapUtilsVersion class

1. Constructors
2. BMFMapUtilsVersion
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static properties
12. nativeUtilsVersion