     }
   }
 
-  func printInstanceIDToken() {
+  @objc func printInstanceIDToken() {
     let instanceID = InstanceID.instanceID().token() ?? "null"
     print("InstanceID token: \(instanceID)")
   }

      navigationController?.navigationBar.barTintColor = ViewController.lightColors.primary
      navigationController?.navigationBar.barStyle = .`default`
      navigationController?.navigationBar.titleTextAttributes = [
        NSForegroundColorAttributeName: UIColor.black
      ]
      tableView.separatorColor = .gray
      tableView.backgroundColor = UIColor(red: 0.94, green: 0.94, blue: 0.94, alpha: 1)

      navigationController?.navigationBar.barTintColor = ViewController.darkColors.primary
      navigationController?.navigationBar.barStyle = .black
      navigationController?.navigationBar.titleTextAttributes = [
        NSAttributedStringKey.foregroundColor: UIColor.white
      ]
      tableView.separatorColor = .lightGray
      tableView.backgroundColor = ViewController.darkColors.secondary
