1. Dart
2. dart:html
3. AnimationEffectTimingReadOnly
4. iterationStart property

AnimationEffectTimingReadOnly class

1. Properties
2. delay
3. direction
4. duration
5. easing
6. endDelay
7. fill
8. hashCode
9. iterations
10. iterationStart
11. runtimeType
12. Methods
13. noSuchMethod
14. toString
15. Operators
16. operator ==

num get iterationStart native;