SuperUserAccessPolicy.php

<?php

declare (strict_types=1);
namespace Drupal\Core\Session;


/**
 * Grants user 1 an all access pass.
 */
final class SuperUserAccessPolicy extends AccessPolicyBase {
    
    /**
     * {@inheritdoc}
     */
    public function calculatePermissions(AccountInterface $account, string $scope) : RefinableCalculatedPermissionsInterface {
        $calculated_permissions = parent::calculatePermissions($account, $scope);
        if ((int) $account->id() !== 1) {
            return $calculated_permissions;
        }
        return $calculated_permissions->addItem(new CalculatedPermissionsItem([], TRUE));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getPersistentCacheContexts() : array {
        return [
            'user.is_super_user',
        ];
    }

}