ProductFactory.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\v2\Product;
 
use Bitrix\Catalog\v2\BaseIblockElementEntity;
use Bitrix\Catalog\v2\BaseIblockElementFactory;
use Bitrix\Main\NotSupportedException;

class ProductFactory extends BaseIblockElementFactory
{
    public const PRODUCT = Product::class;

    public function createEntity(string $entityClass = self::PRODUCT): BaseIblockElementEntity
    {
        if (!is_subclass_of($entityClass, BaseProduct::class))
        {
            throw new NotSupportedException(sprintf(
                'Entity with type {%s} must be an instance of {%s}.',
                $entityClass, BaseProduct::class
            ));
        }
 
        return $this->makeEntity($entityClass);
    }
}