NERTcNetworkStatus constructor Null safety

1. netease_roomkit
2. netease_roomkit
3. NERTcNetworkStatus
4. NERTcNetworkStatus constructor

NERTcNetworkStatus class

1. Constructors
2. NERTcNetworkStatus
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Constants
12. bad
13. down
14. excellent
15. good
16. poor
17. unknown
18. veryBad