}\n\n    if (parent && $(parent).hasClass(CLASS_NAME_DROPDOWN_MENU)) {\n      const dropdownElement = $(element).closest(SELECTOR_DROPDOWN)[0]\n\n      if (dropdownElement) {\n        const dropdownToggleList = [].slice.call(dropdownElement.querySelectorAll(SELECTOR_DROPDOWN_TOGGLE))\n\n        $(dropdownToggleList).addClass(CLASS_NAME_ACTIVE)\n      }\n\n      element.setAttribute('aria-expanded', true)\n    }\n\n    if (callback) {\n      callback()\n    }\n  }\n\n  // Static\n  static _jQueryInterface(config)...