ViewMapAnnotation doesn't support clustering about map HOT 4 CLOSED

import Map
import MapKit
import SwiftUI

struct Annotation: Identifiable {

    let id = UUID()
    let coordinate: CLLocationCoordinate2D
    let clusteringIdentifier: String

}

struct ContentView: View {

    @State private var region = MKCoordinateRegion(
        center: .init(latitude: 50, longitude: 10),
        latitudinalMeters: 100_000,
        longitudinalMeters: 100_000
    )

    @State private var annotations = [
        Annotation(coordinate: .init(latitude: 49.5, longitude: 09.5), clusteringIdentifier: "a"),
        Annotation(coordinate: .init(latitude: 49.5, longitude: 10.0), clusteringIdentifier: "a"),
        Annotation(coordinate: .init(latitude: 49.5, longitude: 10.5), clusteringIdentifier: "a"),
        Annotation(coordinate: .init(latitude: 50.0, longitude: 09.5), clusteringIdentifier: "b"),
        Annotation(coordinate: .init(latitude: 50.0, longitude: 10.0), clusteringIdentifier: "b"),
        Annotation(coordinate: .init(latitude: 50.0, longitude: 10.5), clusteringIdentifier: "b"),
        Annotation(coordinate: .init(latitude: 50.5, longitude: 09.5), clusteringIdentifier: "b"),
        Annotation(coordinate: .init(latitude: 50.5, longitude: 10.0), clusteringIdentifier: "b"),
        Annotation(coordinate: .init(latitude: 50.5, longitude: 10.5), clusteringIdentifier: "b"),
    ]


    var body: some View {
        Map(
            coordinateRegion: $region,
            annotationItems: annotations
        ) { annotation in
            ViewMapAnnotation(coordinate: annotation.coordinate, clusteringIdentifier: annotation.clusteringIdentifier) {
                Circle()
                    .fill((annotation.clusteringIdentifier == "a" ? Color.red : .yellow).opacity(0.5))
                    .frame(width: 16, height: 16)
            }
        } clusterAnnotation: { annotation, members in
            let _ = assert(Set(members.map(\.clusteringIdentifier)).count == 1)
            ViewMapAnnotation(annotation: annotation) {
                Circle()
                    .fill((members.first?.clusteringIdentifier == "a" ? Color.blue : .green).opacity(0.5))
                    .frame(width: 16, height: 16)
            }
        }
        .edgesIgnoringSafeArea(.all)
    }
}