public function __async_getchild($structureId)
    {
        /** @var \samson\cms\Navigation $structure Current structure object */
        $structure = null;

        // If structure was found by Identifier
        if (dbQuery(Navigation::class)->cond('StructureID', $structureId)->first($structure)) {

            /** @var SamsonTree $tree Object to store tree structure */
            $tree = new SamsonTree('tree/template', 0, 'product/addchildren');

            // Asynchronous controller performed and JSON object is returned
            return array('status' => 1, 'tree' => $tree->htmlTree($structure));
        }

        // Asynchronous controller failed
        return array('status' => 0);
    }