func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, didChange newState: MKAnnotationViewDragState, fromOldState oldState: MKAnnotationViewDragState) {
        switch newState {
        case .starting:
            view.dragState = .dragging
            print("start")
        case .ending, .canceling:
            view.dragState = .none
            print("end")

            // Code to open Add new Annotation

        default: break
        }
    }