1. Constructors
  2. Future
  3. delayed
  4. error
  5. microtask
  6. sync
  7. value
  8. Properties
  9. hashCode
  10. runtimeType
  11. Methods
  12. asStream
  13. catchError
  14. noSuchMethod
  15. then
  16. timeout
  17. toString
  18. whenComplete
  19. Operators
  20. operator ==
  21. Static methods
  22. any
  23. doWhile
  24. forEach
  25. wait