FirstViewController.swift

class FirstViewController: UIViewController {
  
  lazy var transitionManager = BHMenuTransitionManager(instance: self, fromViewController: self.navigationController!)
  @IBAction func action_openSideMenu(_ sender: Any) {
    self.performSegue(withIdentifier: "segueMenu", sender: nil)
  }
  
  override func viewDidLoad() {
    super.viewDidLoad()
  }
  
  override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "segueMenu" , let destVc = segue.destination as? UINavigationController {
      destVc.transitioningDelegate = transitionManager
      destVc.modalPresentationStyle = .custom
    }
  }
  
}