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