class VocabularyRouteProvider

class VocabularyRouteProvider extends AdminHtmlRouteProvider {
    
    /**
     * {@inheritdoc}
     */
    public function getRoutes(EntityTypeInterface $entity_type) {
        $collection = parent::getRoutes($entity_type);
        if ($reset_page_route = $this->getResetPageRoute($entity_type)) {
            $collection->add("entity.taxonomy_vocabulary.reset_form", $reset_page_route);
        }
        if ($overview_page_route = $this->getOverviewPageRoute($entity_type)) {
            $collection->add("entity.taxonomy_vocabulary.overview_form", $overview_page_route);
        }
        return $collection;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getCollectionRoute(EntityTypeInterface $entity_type) {
        if ($route = parent::getCollectionRoute($entity_type)) {
            $route->setRequirement('_permission', 'access taxonomy overview+administer taxonomy');
            return $route;
        }
    }
    
    /**
     * Gets the reset page route.
     *
     * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
     *   The entity type.
     *
     * @return \Symfony\Component\Routing\Route|null
     *   The generated route, if available.
     */
    protected function getResetPageRoute(EntityTypeInterface $entity_type) {
        $route = new Route('/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/reset');
        $route->setDefault('_entity_form', 'taxonomy_vocabulary.reset');
        $route->setDefault('_title', 'Reset');
        $route->setRequirement('_permission', $entity_type->getAdminPermission());
        $route->setOption('_admin_route', TRUE);
        return $route;
    }
    
    /**
     * Gets the overview page route.
     *
     * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
     *   The entity type.
     *
     * @return \Symfony\Component\Routing\Route|null
     *   The generated route, if available.
     */
    protected function getOverviewPageRoute(EntityTypeInterface $entity_type) {
        $route = new Route('/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/overview');
        $route->setDefault('_title_callback', 'Drupal\\taxonomy\\Controller\\TaxonomyController::vocabularyTitle');
        $route->setDefault('_form', 'Drupal\\taxonomy\\Form\\OverviewTerms');
        $route->setRequirement('_entity_access', 'taxonomy_vocabulary.access taxonomy overview');
        $route->setOption('_admin_route', TRUE);
        return $route;
    }

}