code: function(xmlStream, model) {
      if (model && model.length) {
        xmlStream.openNode(this.tag, this.$);
        if (this.count) {
          xmlStream.addAttribute(this.$count, model.length);
          xmlStream.addAttribute('manualBreakCount', model.length);
        }
  
        var childXform = this.childXform;
        model.forEach(function(childModel) {
          childXform.render(xmlStream, childModel);
        });
  
        xmlStream.closeNode();
      } else if (this.empty) {
        xmlStream.leafNode(this.tag);
      }
    }
docs: get tag() { return 'rowBreaks'; },