[RC0]How to use NavPopAnchor and NavPushAnchor

Hi friends,ionic2 is a good framework,
our team need a custom url in the webapp,
such as


In inoic2@beta11 ,only can use navCtrl.push ,navCtrl.pop ,we can’t use any route,
In ionic2@rc0,we found some source,but don’t know how to use it ,any one can give us some demo !

thanks!