getPagerLinks example

  protected function respondWithCollection(ResourceObjectData $primary_data, Data $includes, Request $request, ResourceType $resource_type, OffsetPage $page_param) {
    assert(Inspector::assertAllObjects([$includes], IncludedData::class, NullIncludedData::class));
    $link_context = [
      'has_next_page' => $primary_data->hasNextPage(),
    ];
    $meta = [];
    if ($resource_type->includeCount()) {
      $link_context['total_count'] = $meta['count'] = $primary_data->getTotalCount();
    }
    $collection_links = self::getPagerLinks($request, $page_param, $link_context);
    $response = $this->buildWrappedResponse($primary_data, $request, $includes, 200, [], $collection_links, $meta);

    // When a new change to any entity in the resource happens, we cannot ensure     // the validity of this cached list. Add the list tag to deal with that.     $list_tag = $this->entityTypeManager->getDefinition($resource_type->getEntityTypeId())
      ->getListCacheTags();
    $response->getCacheableMetadata()->addCacheTags($list_tag);
    foreach ($primary_data as $entity) {
      $response->addCacheableDependency($entity);
    }
    return $response;
  }