site.php

См. документацию.

<?php
namespace Bitrix\Sale\Services\Company\Restrictions;
 
use Bitrix\Sale\Order;
use Bitrix\Sale\Payment;
use Bitrix\Sale\PaymentCollection;
use Bitrix\Sale\Services;
use Bitrix\Sale\Internals;
use Bitrix\Sale\Shipment;
use Bitrix\Sale\ShipmentCollection;

class Site extends Services\Base\SiteRestriction
{
    protected static function getOrder(Internals\Entity $entity)
    {
        if (!($entity instanceof Payment) && !($entity instanceof Shipment) && !($entity instanceof Order))
        {
            return null;
        }
 
        if ($entity instanceof Order)
        {
            return $entity;
        }
        else
        {
            $collection = $entity->getCollection();

            return $collection->getOrder();
        }
    }
}