Xamarin Forms (iOS): disable swipe back on provided page via custom renderer

NoSwipeBackPageRenderer.cs

using Xamarin.Forms;

[assembly: ExportRenderer(typeof(Appname.Views.DeviceInfoPage), typeof(Appname.iOS.Renderers.NoSwipeBackPageRenderer))]
namespace Appname.iOS.Renderers
{
    // Custom Rendered to disable the swipe back of provided page type (in this case DeviceInfoPage...)
    // source: https://forums.xamarin.com/discussion/26966/how-to-disable-swipe-gesture-on-pushed-page
    public class NoSwipeBackPageRenderer : PageRenderer
    {
        public override void ViewDidAppear(bool animated)
        {
            base.ViewDidAppear(animated);
            var navctrl = this.ViewController.NavigationController;
            navctrl.InteractivePopGestureRecognizer.Enabled = false;
        }
    }
}

Thanks!