num iterations

Source 

@DomName('AnimationEffectTiming.iterations')
@DocsEditable()
@Experimental() // untriaged
num get iterations =>
    _blink.BlinkAnimationEffectTiming.instance.iterations_Getter_(this);
void iterations=(num value)

Source 

@DomName('AnimationEffectTiming.iterations')
@DocsEditable()
@Experimental() // untriaged
set iterations(num value) => _blink.BlinkAnimationEffectTiming.instance
    .iterations_Setter_(this, value);