this._config = config\n    this._element = element\n  }\n\n  // Public\n\n  init() {\n    $(`${SELECTOR_LI}${SELECTOR_OPEN} ${SELECTOR_TREEVIEW_MENU}${SELECTOR_OPEN}`).css('display', 'block')\n    this._setupListeners()\n  }\n\n  expand(treeviewMenu, parentLi) {\n    const expandedEvent = $.Event(EVENT_EXPANDED)\n\n    if (this._config.accordion) {\n      const openMenuLi = parentLi.siblings(SELECTOR_OPEN).first()\n      const openTreeview = openMenuLi.find(SELECTOR_TREEVIEW_MENU).first()\n      this.collapse(openTreeview,...