public static Cons walkExistsTree(Cons tree, Object [] MV_returnarray) {
    { Symbol foundP = Stella.localGensym("FOUND?");
      Cons otree = Cons.list$(Cons.cons(Stella.SYM_STELLA_VRLET, Cons.cons(Cons.cons(Cons.cons(foundP, Cons.cons(Stella.SYM_STELLA_FALSE, Stella.NIL)), Stella.NIL), Cons.cons(Cons.cons(Stella.SYM_STELLA_FOREACH, tree.rest.concatenate(Cons.list$(Cons.cons(Stella.SYM_STELLA_DO, Cons.cons(Cons.list$(Cons.cons(Stella.SYM_STELLA_SETQ, Cons.cons(foundP, Cons.cons(Cons.cons(Stella.SYM_STELLA_TRUE, Stella.NIL), Stella.NIL)))), Cons.cons(Cons.cons(Stella.SYM_STELLA_BREAK, Stella.NIL), Cons.cons(Stella.NIL, Stella.NIL))))), Stella.NIL)), Cons.cons(foundP, Cons.cons(Stella.NIL, Stella.NIL))))));

      return (Cons.walkAConsTree(otree, MV_returnarray));
    }
  }