Terminate an app once Safari Prefe… | Apple Developer Forums

Terminate an app once Safari Preferences has loaded(Swift. MacOS.)

I have a button on click of which Safari Preferences should load. Once Safari Preferences has loaded, I want my apllication to get terminated. But the following code does not wait for the Safari Preferences to get loaded before terminating the app. How do I fix this?

Code Block @IBAction func openSafariExtensionPreferences(_ sender: AnyObject?) {
 SFSafariApplication.showPreferencesForExtension(withIdentifier: extensionBundleIdentifier) { [self] error in
        guard error == nil else {
            self.alert(title: "Error", message: "Safari preferences could not be opened.", buttonText: "Okay")
            return
        }
        DispatchQueue.main.async {
        safariPreferencesButton.isEnabled = false
        NSApplication.shared.terminate(nil)
        }
    }
}