public static Cons yieldDownCastTree(Cons tree, StandardObject returntype) {
    { Cons otree = Stella_Object.sysTree(tree, returntype, new Object[1]);

      if (!(((Keyword)(Stella.$TRANSLATOROUTPUTLANGUAGE$.get())) == Stella.KWD_COMMON_LISP)) {
        Cons.setTargetLanguageType(otree, Stella.SGT_STELLA_OBJECT, new Object[1]);
      }
      return (otree);
    }
  }