SectionProvider.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\v2\Integration\UI\EntitySelector\AgentContract;
 
use Bitrix\Catalog;
 
class SectionProvider extends Catalog\v2\Integration\UI\EntitySelector\SectionProvider
{
    protected const SECTION_ENTITY_ID = 'agent-contractor-section';
}