    function _jsifyBulkSet(bulkSet) {
        var arr = [];
        var it = bulkSet.iterator();
        while (it.hasNext()) {
            var key = it.next();
            var count = bulkSet.get(key);
            var elem = {
                key: jsify(key),
                count: count
            };
            arr.push(elem);
        }
        return arr;
    }