title: Angular2 get ActivatedRoute url
body: <p>I want to get the url which comes from this:</p>
  
  <p><code>this.router.navigate(./somepath, { relativeTo: this.route })</code></p>
  
  <p><code>this.route</code> is of the type <code>ActivatedRoute</code>.</p>
  
  <p>I tried <code>url: string = route.snapshot.url.join('');</code> but this gives an empty string.</p>