num currentTime

Source 

@DomName('AnimationTimeline.currentTime')
@DocsEditable()
@Experimental() // untriaged
num get currentTime => _blink.BlinkAnimationTimeline.instance.currentTime_Getter_(this);
void currentTime=(num value)

Source 

@DomName('AnimationTimeline.currentTime')
@DocsEditable()
@Experimental() // untriaged
set currentTime(num value) => _blink.BlinkAnimationTimeline.instance.currentTime_Setter_(this, value);