How do you use AR Quick Look in SwiftUI?

In swiftui + realitykit, I successfully call up quick look through windowgroup, but I can't close it.

WindowGroup:

import SwiftUI
 
struct ARQuickLookApp: App {
    var body: some Scene {
        WindowGroup {
            Content1View()
        }
    }
}

AR Quick Look:

import SwiftUI
import QuickLook
import RealityKit
import ARKit
 
 
struct Content1View: View {
    var body: some View {
        ARQLView1Controller()
    }
}
 
struct ARQLView1Controller: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> some UIViewController {
        return UINavigationController.init(rootViewController: View1Controller())
    }
    func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
    }
}
 
class View1Controller: UIViewController, QLPreviewControllerDataSource {
    override func viewDidAppear(_ animated: Bool) {
        let previewController = QLPreviewController()
        previewController.dataSource = self
        present(previewController, animated: true, completion: nil)
    }
    func numberOfPreviewItems(in controller: QLPreviewController) -> Int { return 1 }
    func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
        guard let path = Bundle.main.path(forResource: "U1CrystalCell", ofType: "reality") else { fatalError("Couldn't find the supported input file.") }
        let url = URL(fileURLWithPath: path)
        return url as QLPreviewItem
    }
}