code: function (request, options, callback) {
          var builders = new Builders(options),
              converted,
              err;
  
          try {
              converted = builders.singleItem(_.cloneDeep(request));
          }
          catch (e) {
              err = e;
          }
  
          if (callback) {
              return callback(err, converted);
          }
  
          if (err) {
              throw err;
          }
  
          return converted;
      }
docs: Converts a single V1 request to a V2 item.
  
  @param {Object} request - The v1 request to convert to v2.
  @param {Object} options - The set of options for v1 -> v2 conversion.
  @param {Function} callback - The function to be invoked when the conversion has completed.