num regionAnchorX

Source 

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

Source 

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