SWRevealViewController의 SlideMenuViewController에서 TabBarController 열기

How to open a TabBarController in ViewControllers that Instantiate from SlideMenuViewController

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class MenuViewController: UITableViewController {     override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {         let tabIndex = indexPath.row         let tabbarVC = (revealViewController().frontViewController as! UITabBarController)         tabbarVC.selectedIndex = tabIndex         revealViewController().revealToggle(animated: true)     } }