1. Dart
2. dart:html
3. BackgroundFetchedEvent
4. updateUI method

BackgroundFetchedEvent class

1. Constructors
2. BackgroundFetchedEvent
3. Properties
4. fetches
5. bubbles
6. cancelable
7. composed
8. currentTarget
9. defaultPrevented
10. eventPhase
11. hashCode
12. id
13. isTrusted
14. matchingTarget
15. path
16. runtimeType
17. target
18. timeStamp
19. type
20. Methods
21. updateUI
22. composedPath
23. noSuchMethod
24. preventDefault
25. stopImmediatePropagation
26. stopPropagation
27. toString
28. waitUntil
29. Operators
30. operator ==

Future updateUI(String title) =>
    promiseToFuture(JS("", "#.updateUI(#)", this, title));