1. Constructors
  2. nothing
  3. waiting
  4. withData
  5. withError
  6. Properties
  7. connectionState
  8. data
  9. error
  10. hasData
  11. hasError
  12. hashCode
  13. requireData
  14. runtimeType
  15. stackTrace
  16. Methods
  17. inState
  18. noSuchMethod
  19. toString
  20. Operators
  21. operator ==