/**
  * Constructs a new RouteNameResponseSubscriber.
  *
  * @param \Drupal\Core\Routing\StackedRouteMatchInterface $route_match
  *   The current route match.
  */
 public function __construct(StackedRouteMatchInterface $route_match)
 {
     $this->routeMatch = $route_match->getMasterRouteMatch();
 }