How to show the selected pin image?

I have a requirement for which I need to show a different annotation image when an annotation is selected. How can I do that?

```
extension KiosksViewController: MapViewPlusDelegate {   
    func mapView(_ mapView: MapViewPlus, imageFor annotation: AnnotationPlus) -> UIImage {        
        return UIImage(named: "map_pin")!
    }
}
```

Right now, I am showing an image like this. 