code: public Object convertExtension(Object name, QualifiedName id, Object args,
                                     Object dAttrs) {
          System.out.println("Name @" + name);
          System.out.println("Name @" + id);
          System.out.println("Name @" + args);
          System.out.println("Name @" + dAttrs);
          // String s=keyword((String)name) + "(" + oldOptionalId(id) + args +
          // oldOptionalAttributes(dAttrs) + ")";
          // return s;
          return null;
      }
docs: TODO