code: function () {
              if (this.wrapItems) {
                  return new Iterator(this.sort()._values.map(function (item) {
                      return item.value;
                  }));
              }
              return new SjlMap.prototype.values.call(this.sort());
          }
docs: Returns an iterator for values in this priority list.
  @method sjl.stdlib.PriorityList#values
  @overrides sjl.stdlib.SjlMap#values
  @returns {sjl.stdlib.Iterator}