how to googlemaps view on swiftui

AppDelegate.swift

import UIKit
import GoogleMaps

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // https://developers.google.com/maps/documentation/ios-sdk/get-api-key#add_key
        GMSServices.provideAPIKey("YOUR_API_KEY")
       return true
    }
}

ContentView.swift

import SwiftUI

struct ContentView: View {
    @ObservedObject var viewModel = ContentViewModel()
    
    var body: some View {
        NavigationView {
            GoogleMapView()
        }
    }
}

GoogleMapView.swift

// ref:https://stackoverflow.com/questions/58194015/google-maps-integration-into-swiftui
import SwiftUI
import UIKit
import GoogleMaps

struct GoogleMapView: UIViewRepresentable {

    let marker : GMSMarker = GMSMarker()

    /// Creates a `UIView` instance to be presented.
    func makeUIView(context: Self.Context) -> GMSMapView {
        // Create a GMSCameraPosition that tells the map to display the
        // coordinate -33.86,151.20 at zoom level 6.
        let camera = GMSCameraPosition.camera(withLatitude: -33.86, longitude: 151.20, zoom: 6.0)
        let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)

        return mapView
    }

    /// Updates the presented `UIView` (and coordinator) to the latest
    /// configuration.
    func updateUIView(_ mapView: GMSMapView, context: Self.Context) {
        // Creates a marker in the center of the map.
        marker.position = CLLocationCoordinate2D(latitude: -33.86, longitude: 151.20)
        marker.title = "Sydney"
        marker.snippet = "Australia"
        marker.map = mapView
    }


}

struct GoogleMapView_Previews: PreviewProvider {
    static var previews: some View {
        GoogleMapView()
    }
}