code: function (obj, prettyPrint) {
      return prettyPrint ? JSON.stringify(obj,
          Object.keys(findUniqueKeys(
              obj, {}, [])).sort(), 4) : JSON.stringify(obj)
    }
docs: Converts the specified object to a JSON string and returns it.
  @param {Object} obj - The object.
  @param {Boolean} [prettyPrint=false] - Whether to pretty print the JSON.
  @returns {String} The JSON string.