How to make view appear as modal after Google Maps marker infoWindow is tapped in iOS?

Right now I'm building an app using SwiftUI and Google Maps. I'm trying to have a View displayed as an iOS modal after a user taps a Google Maps marker's infoWindow, but I'm having trouble getting it working.

In other parts of my app I displaying modals using this method: Example method here

I tried using the same method above to display a modal after a marker's infoWindow is tapped, but am having trouble doing it from within a function. My code below gives more details.

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Below is a stripped down version of my GMView.swift file which displays an instance of Google Maps and handles all changes to it. (My file looks different from typical Swift + Google maps integration because im using SwiftUI) [You'll notice 3 main parts of the file: 1.the view, 2. the GMController class, and 3. the GMControllerRepresentable struct]:

import SwiftUI
import UIKit
import GoogleMaps
import GooglePlaces
import CoreLocation
import Foundation



struct GoogMapView: View {
    var body: some View {
        GoogMapControllerRepresentable()
    }
}


class GoogMapController: UIViewController, CLLocationManagerDelegate, GMSMapViewDelegate {
    var locationManager = CLLocationManager()
    var mapView: GMSMapView!
    let defaultLocation = CLLocation(latitude: 42.361145, longitude: -71.057083)
    var zoomLevel: Float = 15.0
    let marker : GMSMarker = GMSMarker()


    override func viewDidLoad() {
        super.viewDidLoad()

//        Control location data
        locationManager.requestAlwaysAuthorization()
        locationManager.requestWhenInUseAuthorization()
        if CLLocationManager.locationServicesEnabled() {
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
            locationManager.distanceFilter = 50
            locationManager.startUpdatingLocation()
        }


        let camera = GMSCameraPosition.camera(withLatitude: defaultLocation.coordinate.latitude, longitude: defaultLocation.coordinate.longitude, zoom: zoomLevel)
        mapView = GMSMapView.map(withFrame: view.bounds, camera: camera)
        mapView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        mapView.isMyLocationEnabled = true
        mapView.setMinZoom(14, maxZoom: 20)
        mapView.settings.compassButton = true
        mapView.isMyLocationEnabled = true
        mapView.settings.myLocationButton = true
        mapView.settings.scrollGestures = true
        mapView.settings.zoomGestures = true
        mapView.settings.rotateGestures = true
        mapView.settings.tiltGestures = true
        mapView.isIndoorEnabled = false


        marker.position = CLLocationCoordinate2D(latitude: 42.361145, longitude: -71.057083)
        marker.title = "Boston"
        marker.snippet = "USA"
        marker.map = mapView


//        view.addSubview(mapView)
        mapView.delegate = self
        self.view = mapView

    }

    // Handle incoming location events.
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
      let location: CLLocation = locations.last!
      print("Location: \(location)")
    }

    // Handle authorization for the location manager.
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
      switch status {
      case .restricted:
        print("Location access was restricted.")
      case .denied:
        print("User denied access to location.")
        // Display the map using the default location.
        mapView.isHidden = false
      case .notDetermined:
        print("Location status not determined.")
      case .authorizedAlways: fallthrough
      case .authorizedWhenInUse:
        print("Location status is OK.")
      }
    }

    // Handle location manager errors.
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
      locationManager.stopUpdatingLocation()
      print("Error: \(error)")
    }

}


struct GoogMapControllerRepresentable: UIViewControllerRepresentable {
    func makeUIViewController(context: UIViewControllerRepresentableContext<GMControllerRepresentable>) -> GMController {
        return GMController()
    }

    func updateUIViewController(_ uiViewController: GMController, context: UIViewControllerRepresentableContext<GMControllerRepresentable>) {

    }
}

This is the function I've added to the GMController class in my GMView.swift file above that Google's documentation says to use to handle when a marker's infoWindow is tapped:

// Function to handle when a marker's infowindow is tapped
    func mapView(_ mapView: GMSMapView, didTapInfoWindowOf didTapInfoWindowOfMarker: GMSMarker) {
        print("You tapped a marker's infowindow!")
//        This is where i need to get the view to appear as a modal.
        return
    }

Does anyone know how I can use the function above to display a view named 'ExampleView.swift' as a modal?

from How to make view appear as modal after Google Maps marker infoWindow is tapped in iOS?