How to call didUpdateLocation in another viewcontroller class from custom location manager?

protocol CustomLocationManagerDelegate: class {
    func customLocationManager(didUpdate locations: [CLLocation])
}

class CustomLocationManager:NSObject, CLLocationManagerDelegate {
    static let shared = CustomLocationManager()

    // tip: it is better to declare `locationManager` as private, so you can only access it
    // from the manager...
    private var locationManager = CLLocationManager()

    // here is the delegate:
    weak var delegate: CustomLocationManagerDelegate?

    private override init()
    {
        super.init()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest}
    func startTracking()
    {
        locationManager.startUpdatingLocation()
        locationManager.startUpdatingHeading()
    }

    func stopTracking()
    {
        locationManager.stopUpdatingHeading()
        locationManager.stopUpdatingLocation()
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        // calling the delegate method
        delegate?.customLocationManager(didUpdate: locations)
    }
}

class MyViewController: UIViewController {
    // ...
    override func viewDidLoad() {
        super.viewDidLoad()

        CustomLocationManager.shared.startTracking()
        CustomLocationManager.shared.delegate = self
    }
    // ...
}

extension MyViewController: CustomLocationManagerDelegate {
    func customLocationManager(didUpdate locations: [CLLocation]) {
        // here we go:
        for currentLocation in locations {
            print("\(index):\(currentLocation)")
        }
    }
}

class CustomLocationManager:NSObject, CLLocationManagerDelegate {
    static let shared = CustomLocationManager()

    // here is the closure
    var updatedLocations: (([CLLocation]) -> Void)?

    // tip: it is better to declare `locationManager` as private, so you can only access it
    // from the manager...
    private var locationManager = CLLocationManager()

    // here is the delegate:
    weak var delegate: CustomLocationManagerDelegate?

    private override init()
    {
        super.init()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest}
    func startTracking()
    {
        locationManager.startUpdatingLocation()
        locationManager.startUpdatingHeading()
    }

    func stopTracking()
    {
        locationManager.stopUpdatingHeading()
        locationManager.stopUpdatingLocation()
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        // here we call it:
        updatedLocations?(locations)
    }
}

class MyViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        CustomLocationManager.shared.startTracking()

        CustomLocationManager.shared.updatedLocations = { [weak self] locations in
            guard let unwarappedSelf = self else { return }
            // unwarappedSelf.blablabla

            for currentLocation in locations {
                print(currentLocation)
            }
        }
    }
}