public function get_items() {
        if (!isset($this->data[Parser::INDEX_CHILDREN_SPEC])) {
            return array();
        }

        $items = array();
        foreach ($this->data[Parser::INDEX_CHILDREN_SPEC] as $k => $data) {
            $items[] = $this->api->get_item($data['value']);
        }
        
        return $items;
    }