@Override
 public void setAriaHaspopupProperty(Element element, boolean value) {
   Property.HASPOPUP.set(element, value);
 }
 @Override
 public String getAriaHaspopupProperty(Element element) {
   return Property.HASPOPUP.get(element);
 }
 @Override
 public void removeAriaHaspopupProperty(Element element) {
   Property.HASPOPUP.remove(element);
 }