docs: public Enumeration<PropertyRepresentation> addRepresentationElement() {//2 
        Enumeration<PropertyRepresentation> t = new Enumeration<PropertyRepresentation>(new PropertyRepresentationEnumFactory());
        if (this.representation == null)
          this.representation = new ArrayList<Enumeration<PropertyRepresentation>>();
        this.representation.add(t);
        return t;
      }