appsettings.json变更后如何重启ASP.NET Core5.0网站？

services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));
services.AddSingleton<IHostedService, AppSettingsChangeWatcher>();

public class AppSettingsChangeWatcher : IHostedService
{
    private readonly IConfiguration _configuration;
    private readonly IHostApplicationLifetime _appLifetime;
    private readonly FileSystemWatcher _fileWatcher;

    public AppSettingsChangeWatcher(IConfiguration configuration, IHostApplicationLifetime appLifetime)
    {
        _configuration = configuration;
        _appLifetime = appLifetime;

        _fileWatcher = new FileSystemWatcher
        {
            Path = AppContext.BaseDirectory,
            Filter = "appsettings.json",
            NotifyFilter = NotifyFilters.LastWrite,
            EnableRaisingEvents = true
        };

        _fileWatcher.Changed += OnAppSettingsChanged;
    }

    public Task StartAsync(CancellationToken cancellationToken)
    {
        return Task.CompletedTask;
    }

    public Task StopAsync(CancellationToken cancellationToken)
    {
        _fileWatcher.Changed -= OnAppSettingsChanged;
        _fileWatcher.Dispose();
        return Task.CompletedTask;
    }

    private void OnAppSettingsChanged(object sender, FileSystemEventArgs e)
    {
        // 重启网站
        _appLifetime.StopApplication();
    }
}

services.Configure<AppSettings>(Configuration.GetSection("AppSettings"))
    .ReloadOnChange(true);