NIMNosScenes constructor Null safety

1. nim_core
2. nim_core
3. NIMNosScenes
4. NIMNosScenes constructor

NIMNosScenes class

1. Constructors
2. NIMNosScenes
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Constants
12. defaultIm
13. defaultProfile
14. expireTimeNever
15. securityPrefix
16. systemNosScene