setChildrenCount example

$shopPage->setTpl3Variable($data['__page_tpl3variable']);
        $shopPage->setTpl3Path($data['__page_tpl3path']);
        $shopPage->setDescription($data['__page_description']);
        $shopPage->setHtml($data['__page_html']);
        $shopPage->setGrouping(explode('|', $data['__page_grouping']));
        $shopPage->setPosition((int) $data['__page_position']);
        $shopPage->setLink($data['__page_link']);
        $shopPage->setTarget($data['__page_target']);
        $shopPage->setPageTitle($data['__page_page_title']);
        $shopPage->setMetaKeywords($data['__page_meta_keywords']);
        $shopPage->setMetaDescription($data['__page_meta_description']);
        $shopPage->setChildrenCount((int) $data['__page_children_count']);

        if (isset($data['__page_parent_id']) && $data['__page_parent_id'] > 0) {
            $shopPage->setParentId((int) $data['__page_parent_id']);
        }

        if (!empty($data['__page_changed'])) {
            $shopPage->setChanged(DateTime::createFromFormat('Y-m-d H:i:s', $data['__page_changed']));
        }

        $shopIds = [];