class EntityBundleAccessCheck

class EntityBundleAccessCheck implements AccessInterface {
    
    /**
     * Checks entity bundle match based on the _entity_bundles route requirement.
     *
     * @code
     * example.route:
     *   path: foo/{example_entity_type}/{other_parameter}
     *   requirements:
     *     _entity_bundles: 'example_entity_type:example_bundle|other_example_bundle'
     * @endcode
     *
     * @param \Symfony\Component\Routing\Route $route
     *   The route to check against.
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The parametrized route.
     * @param \Drupal\Core\Session\AccountInterface $account
     *   The currently logged in account.
     *
     * @return \Drupal\Core\Access\AccessResultInterface
     *   The access result.
     */
    public function access(Route $route, RouteMatchInterface $route_match, AccountInterface $account) {
        @trigger_error('The ' . __NAMESPACE__ . '\\EntityBundleAccessCheck is deprecated in drupal:9.2.0 and is removed from drupal:10.0.0. Specify the list of bundles in the entity parameter, under "bundle" key, as a sequence, instead. See https://www.drupal.org/node/3155569', E_USER_DEPRECATED);
        if ($route->hasRequirement('_entity_bundles')) {
            [
                $entity_type,
                $bundle_definition,
            ] = explode(':', $route->getRequirement('_entity_bundles'));
            $bundles = explode('|', $bundle_definition);
            $parameters = $route_match->getParameters();
            if ($parameters->has($entity_type)) {
                $entity = $parameters->get($entity_type);
                if ($entity instanceof EntityInterface && in_array($entity->bundle(), $bundles, TRUE)) {
                    return AccessResult::allowed()->addCacheableDependency($entity);
                }
            }
        }
        return AccessResult::neutral('The entity bundle does not match the route _entity_bundles requirement.');
    }

}