1. Dart
2. dart:html
3. SpeechSynthesisUtterance
4. lang property

SpeechSynthesisUtterance class

1. Constructors
2. SpeechSynthesisUtterance
3. Properties
4. lang
5. onBoundary
6. onEnd
7. onError
8. onMark
9. onPause
10. onResume
11. onStart
12. pitch
13. rate
14. text
15. voice
16. volume
17. hashCode
18. on
19. runtimeType
20. Methods
21. addEventListener
22. dispatchEvent
23. noSuchMethod
24. removeEventListener
25. toString
26. Operators
27. operator ==
28. Constants
29. boundaryEvent
30. endEvent
31. errorEvent
32. markEvent
33. pauseEvent
34. resumeEvent
35. startEvent