code: public void showRerouteState() {
      if (rerouteLayout.getVisibility() == INVISIBLE) {
        rerouteLayout.startAnimation(rerouteSlideDownTop);
        rerouteLayout.setVisibility(VISIBLE);
      }
    }
docs: Will slide the reroute view down from the top of the screen
  and make it visible
  
  @since 0.6.0