1. Constructors
2. new
3. Properties
4. hashCode
5. runtimeType
6. toJS ^(ext)
7. toJS ^(ext)
8. Methods
9. asStream
10. catchError
11. ignore ^(ext)
12. noSuchMethod
13. onError ^(ext)
14. then
15. timeout
16. toString
17. whenComplete
18. Operators
19. operator ==