fetchIntegrationPermissions example

        if ($userId !== null) {
            $source->setPermissions($this->fetchPermissions($userId));
            $source->setIsAdmin($this->isAdmin($userId));

            return $source;
        }

        if ($integrationId !== null) {
            $source->setIsAdmin($this->isAdminIntegration($integrationId));
            $source->setPermissions($this->fetchIntegrationPermissions($integrationId));

            return $source;
        }

        return $source;
    }

    private function isAdmin(string $userId): bool
    {
        return (bool) $this->connection->fetchOne(
            'SELECT admin FROM `user` WHERE id = :id',
            [