Router::getChildrenItemsListUrl

public function getChildrenItemsListUrl(int $entityTypeId, int $parentEntityTypeId, int $parentEntityId): ?Uri
{
	$factory = Container::getInstance()->getFactory($entityTypeId);
	if (!$factory)
	{
		return null;
	}

	$componentName = $this->getItemListComponentName($entityTypeId);
	if (!$componentName)
	{
		return null;
	}
	$componentPath = \CComponentEngine::makeComponentPath($componentName);
	$componentPath = getLocalPath('components'.$componentPath.'/lazyload.ajax.php');
	$url = new Uri($componentPath);
	$url->addParams([
		'entityTypeId' => $entityTypeId,
		'parentEntityTypeId' => $parentEntityTypeId,
		'parentEntityId' => $parentEntityId,
		'sessid' => bitrix_sessid(),
		'site' => SITE_ID,
	]);

	return $url;
}