public static Cons symbolPlistSetter(Symbol symbol, Cons plist) {
    { Cons vplist = symbol.symbolValueAndPlist;

      if (vplist == Stella.NIL) {
        vplist = Cons.cons(null, Stella.NIL);
        symbol.symbolValueAndPlist = vplist;
      }
      return (vplist.rest = plist);
    }
  }