getOverviewPageRoute example

/** * {@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)) {