从Xcode 11获取Master-Detail应用模板？

import UIKit

class MasterViewController: UITableViewController {
    var detailViewController: DetailViewController? = nil
    var objects = [Any]()

    override func viewDidLoad() {
        super.viewDidLoad()
        navigationItem.leftBarButtonItem = editButtonItem
        let addButton = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(insertNewObject(_:)))
        navigationItem.rightBarButtonItem = addButton
        if UIDevice.current.userInterfaceIdiom == .pad {
            navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .search, target: self, action: #selector(search(_:)))
        }
    }

    @objc func insertNewObject(_ sender: Any) {
        objects.insert(Date(), at: 0)
        let indexPath = IndexPath(row: 0, section: 0)
        tableView.insertRows(at: [indexPath], with: .automatic)
    }

    // Table view data source methods...
}

class DetailViewController: UIViewController {
    @IBOutlet weak var detailDescriptionLabel: UILabel!

    func configureView() {
        // Update the user interface for the detail item.
        if let detail = detailItem {
            if let label = detailDescriptionLabel {
                label.text = detail.description
            }
        }
    }

    var detailItem: Any? {
        didSet {
            configureView()
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        configureView()
    }
}