num get iterationStart => JS("num", "#.iterationStart", this);void iterationStart= (
set iterationStart(num value) { JS("void", "#.iterationStart = #", this, value); }
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-html/AnimationEffectTiming/iterationStart.html