base.php

<?php
 
namespace Bitrix\Rest\Engine\ActionFilter;
 
use Bitrix\Main\Engine;
use Bitrix\Main\Engine\Controller;
 
abstract class Base extends Engine\ActionFilter\Base
{
    public function listAllowedScopes()
    {
        return [
            Controller::SCOPE_REST
        ];
    }
 
    protected function getRestServer()
    {
        $restServer = null;
        $sourceParametersList = $this->getAction()->getController()->getSourceParametersList();
        foreach ($sourceParametersList as $list)
        {
            foreach ($list as $name => $parameter)
            {
                if ($parameter instanceof \CRestServer)
                {
                    $restServer = $parameter;
                    break;
                }
            }
        }
 
        return $restServer;
    }
}