Determine which window to start in Bootstrapper

[wuhl508159280]

Application.Current.StartupUri = new Uri("pack://application:,,,/Windows/Error.xaml");
This code can change the interface at startup, how to write it in stylet

[canton7]

public class Bootstrapper<MyRootViewModel>
{
    protected override void Launch()
    {
        if (something)
            this.DisplayRootView(this.RootViewModel); // Shows MyRootViewModel
        else
            this.DisplayRootView(this.Container.Get<ErrorViewModel>()); // Shows ErrorViewModel
    }
}