_initInstance(options) {
    super._initInstance(options);

    const { button, eventManager } = options;

    this._button = button;
    this._eventManager = eventManager;
    this._toolbar = new Toolbar(eventManager);
  }
/**
   * init instance.
   * store properties & prepare before initialize DOM
   * @param {LayerPopupOption} options - layer popup options
   * @private
   * @override
   */
init instance.
store properties & prepare before initialize DOM
@param {LayerPopupOption} options - layer popup options
@private
@override
init instance . store properties & prepare before initialize DOM @param { LayerPopupOption } options - layer popup options @private @override
_initInstance(options) {
    super._initInstance(options);
    const { button, eventManager } = options;
    this._button = button;
    this._eventManager = eventManager;
    this._toolbar = new Toolbar(eventManager);
  }
_initInstance ( options ) { super . _initInstance ( options ) ; const { button , eventManager } = options ; this . _button = button ; this . _eventManager = eventManager ; this . _toolbar = new Toolbar ( eventManager ) ; }
init instance.
init instance .