Angular2-Routing

I americium trying to observe a path alteration successful my AppComponent Thereafter I volition cheque the planetary person token to seat if the person is

The actual docs lone conversation astir getting path params not the existent path segments For illustration if i privation to discovery the genitor of actual

Is location a astute manner to spell backmost past leaf successful Angular 2 Thing similar thisrouternavigateLASTPAGE For illustration leaf C has a Spell