1. Properties
2. hashCode
3. isErr
4. isOk
5. runtimeType
6. unsafe
7. Methods
8. asOption
9. getOr
10. getOrDo
11. getOrDoAsync
12. ifOk
13. ifOkAsync
14. match
15. noSuchMethod
16. toString
17. Operators
18. operator ==
19. Static methods
20. tryOrExplain