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;
    }
public Enumeration < PropertyRepresentation > addRepresentationElement ( ) { Enumeration < PropertyRepresentation > t = new Enumeration < PropertyRepresentation > ( new PropertyRepresentationEnumFactory ( ) ) ; if ( this . representation == null ) this . representation = new ArrayList < Enumeration < PropertyRepresentation > > ( ) ; this . representation . add ( t ) ; return t ; }
syntactic sugar