func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
  ...
  AppsFlyerLib.shared().deepLinkDelegate = self
  ...
}

// For Swift version < 4.2 replace function signature with the commented out code
// func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool { // this line for Swift < 4.2
func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
  AppsFlyerLib.shared().continue(userActivity, restorationHandler: nil)
  return true
}

// Open URI-scheme for iOS 9 and above
func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
  AppsFlyerLib.shared().handleOpen(url, options: options)
  return true
}

extension AppDelegate: DeepLinkDelegate {
    func didResolveDeepLink(_ result: DeepLinkResult) {
        var fruitNameStr: String?
        switch result.status {
        case .notFound:
            NSLog("[AFSDK] Deep link not found")
            return
        case .failure:
            print("Error %@", result.error!)
            return
        case .found:
            NSLog("[AFSDK] Deep link found")
        }
        
        guard let deepLinkObj:DeepLink = result.deepLink else {
            NSLog("[AFSDK] Could not extract deep link object")
            return
        }
        
        if deepLinkObj.clickEvent.keys.contains("deep_link_sub2") {
            let ReferrerId:String = deepLinkObj.clickEvent["deep_link_sub2"] as! String
            NSLog("[AFSDK] AppsFlyer: Referrer ID: \(ReferrerId)")
        } else {
            NSLog("[AFSDK] Could not extract referrerId")
        }        
        
        let deepLinkStr:String = deepLinkObj.toString()
        NSLog("[AFSDK] DeepLink data is: \(deepLinkStr)")
            
        if( deepLinkObj.isDeferred == true) {
            NSLog("[AFSDK] This is a deferred deep link")
        }
        else {
            NSLog("[AFSDK] This is a direct deep link")
        }
        
        fruitNameStr = deepLinkObj.deeplinkValue
        walkToSceneWithParams(fruitName: fruitNameStr!, deepLinkData: deepLinkObj.clickEvent)
    }
}
// User logic
fileprivate func walkToSceneWithParams(deepLinkObj: DeepLink) {
    let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
    UIApplication.shared.windows.first?.rootViewController?.dismiss(animated: true, completion: nil)
    guard let fruitNameStr = deepLinkObj.clickEvent["deep_link_value"] as? String else {
         print("Could not extract query params from link")
         return
    }
    let destVC = fruitNameStr + "_vc"
    if let newVC = storyBoard.instantiateVC(withIdentifier: destVC) {
       print("AppsFlyer routing to section: \(destVC)")
       newVC.deepLinkData = deepLinkObj
       UIApplication.shared.windows.first?.rootViewController?.present(newVC, animated: true, completion: nil)
    } else {
        print("AppsFlyer: could not find section: \(destVC)")
    }
}