如何从MKLocalSearchCompletion中提取国家和城市？

import MapKit

func extractCountryAndCity(from completion: MKLocalSearchCompletion) {
    let geocoder = CLGeocoder()
    let locationName = completion.title
    
    geocoder.geocodeAddressString(locationName) { (placemarks, error) in
        if let error = error {
            print("Geocoding error: \(error.localizedDescription)")
            return
        }
        
        if let placemark = placemarks?.first {
            let country = placemark.country
            let city = placemark.locality
            
            print("Country: \(country ?? "")")
            print("City: \(city ?? "")")
        }
    }
}