on (ob) {
            var pb = b(0);
            var qb;
            var rb = (function (sb) {
                return (function (tb) {
                    pb[sb] = tb;
                    return null;
                });
            });
            qb = (function (sb) {
                return M(rb, sb);
            });
            qb(ob);
            return pb;
        });
        R = (function (ob, pb) {
            return J((function (qb) {
                var rb;
                rb = (new ab(pb, ob));
  