code: function Group(config) {
    if (!(this instanceof Group)) {
      return new Group(config);
    }
  
    Base.call(this, config);
    this.is('Group');
    this.use(utils.option());
    this.use(utils.plugin());
    this.init();
  }
docs: Create an instance of `Group` with the given `options`.
  
  ```js
  var group = new Group({
  'foo': { items: [1,2,3] }
  });
  ```
  @param {Object} `options`
  @api public