public function delete(array $arr_ids)
    {
        $obj_request = new DeleteDocumentRequest();
        $obj_params = $this->prepareRequestParams($obj_request);
        foreach($arr_ids as $str_id) {
            $obj_params->addDocId($str_id);
        }
        $this->execute('DeleteDocument', $obj_request, new DeleteDocumentResponse());
    }