PageAttachmentsHook.php

<?php

declare (strict_types=1);
namespace Drupal\system\Hook;

use Drupal\Core\Hook\Attribute\Hook;
use Drupal\Core\Render\BareHtmlPageRendererInterface;

/**
 * Implements hook_page_attachments() for the system module.
 */
final class PageAttachmentsHook {
  public function __construct(private readonly BareHtmlPageRendererInterface $bareHtmlPageRenderer) {
  }
  
  /**
   * Implements hook_page_attachments().
   *
   * @see template_preprocess_maintenance_page()
   * @see \Drupal\Core\EventSubscriber\ActiveLinkResponseFilter
   */
  public function pageAttachments(array &$page) : void {
    $this->bareHtmlPageRenderer
      ->systemPageAttachments($page);
  }

}