code: function() {
          "use strict";
          var ret = "";
          if (this.json.length > 0) {
              if (this.json.length === 1) {
                  ret = JSON.stringify(this.json[0]);
              } else {
                  ret = JSON.stringify(this.json);
              }
          }
          return ret;
      }
docs: Return content to be printed after all file results.
  @return {String} to append after all results