edEvent)\n      treeviewMenu.find(`${SELECTOR_OPEN} > ${SELECTOR_TREEVIEW_MENU}`).slideUp()\n      treeviewMenu.find(SELECTOR_OPEN).removeClass(`${CLASS_NAME_IS_OPENING} ${CLASS_NAME_OPEN}`)\n    })\n  }\n\n  toggle(event) {\n    const $relativeTarget = $(event.currentTarget)\n    const $parent = $relativeTarget.parent()\n\n    let treeviewMenu = $parent.find(`> ${SELECTOR_TREEVIEW_MENU}`)\n\n    if (!treeviewMenu.is(SELECTOR_TREEVIEW_MENU)) {\n      if (!$parent.is(SELECTOR_LI)) {\n        treeviewMenu...