1. Dart
2. dart:html
3. KeyEvent
4. isComposed property

KeyEvent class

1. Constructors
2. KeyEvent
3. wrap
4. Properties
5. altKey
6. charCode
7. code
8. ctrlKey
9. currentTarget
10. detail
11. isComposed
12. isComposing
13. key
14. keyCode
15. location
16. metaKey
17. repeat
18. shiftKey
19. sourceCapabilities
20. view
21. which
22. bubbles
23. cancelable
24. composed
25. defaultPrevented
26. eventPhase
27. hashCode
28. isTrusted
29. matchingTarget
30. path
31. runtimeType
32. target
33. timeStamp
34. type
35. wrapped
36. Methods
37. getModifierState
38. composedPath
39. noSuchMethod
40. preventDefault
41. stopImmediatePropagation
42. stopPropagation
43. toString
44. Operators
45. operator ==
46. Static properties
47. canUseDispatchEvent
48. keyDownEvent
49. keyPressEvent
50. keyUpEvent

bool get isComposed => throw new UnimplementedError();