num regionAnchorY

Source 

@DomName('VTTRegion.regionAnchorY')
@DocsEditable()
@Experimental() // untriaged
num get regionAnchorY => _blink.BlinkVTTRegion.instance.regionAnchorY_Getter_(this);
void regionAnchorY=(num value)

Source 

@DomName('VTTRegion.regionAnchorY')
@DocsEditable()
@Experimental() // untriaged
set regionAnchorY(num value) => _blink.BlinkVTTRegion.instance.regionAnchorY_Setter_(this, value);