UserModel.php

См. документацию.

<?php
 
namespace Bitrix\Socialnetwork\Access\User;
 
class UserModel extends \Bitrix\Main\Access\User\UserModel
{
 
    public function getRoles(): array
    {
        return $this->getAccessCodes();
    }
 
    public function getPermission(string $permissionId): ?int
    {
        return null;
    }
 
    public function getAccessCodes(): array
    {
        return array_merge(parent::getAccessCodes(), ['AU']);
    }
}