code: function set(values) {
      var s = this;
  
      if (arguments.length === 2) {
        values = {};
        var key = arguments[0];
        values[key] = arguments[1];
      }
  
      Object.assign(s, values);
      return s;
    }
docs: Set values.
  @param {object} values - Values to set
  @returns {ASchema} - Returns self.