private function buildRoutes(): void
    {
        if ($this->loaded['routes']) {
            return;
        }

        $this->loaded['routes'] = true;

        $this->routes = new RouteCollection(
            $this->getBaseCodeRoute(),
            $this->getBaseRouteName(),
            $this->getBaseRoutePattern(),
            $this->getBaseControllerName()
        );

        $this->routeBuilder->build($this, $this->routes);

        $this->configureRoutes($this->routes);

        foreach ($this->getExtensions() as $extension) {
            $extension->configureRoutes($this, $this->routes);
        }
    }