}

    /**
     * {@link BigDecimal}を文字列に変換します。
     *
     * @param dec
     *            変換元の{@link BigDecimal}
     * @return 変換された文字列
     */
    public static String toString(final BigDecimal dec) {
        return dec.toPlainString();
    }

    /**
     * {@link BigDecimal}を正規化します。
     *
     * @param dec
     *            変換元の{@link BigDecimal}
     * @return 正規化されたデータ
     */

        return asStream(id)//
                .header("Pragma", "no-cache")//
                .header("Cache-Control", "no-cache")//
                .header("Expires", "Thu, 01 Dec 1994 16:00:00 GMT")//
                .header("Content-Type", "application/x-ndjson")//
                .stream(out -> {

        response.header("Pragma", "no-cache");
        response.header("Cache-Control", "no-cache");
        response.header("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");
    }

    protected void writeFileName(final StreamResponse response, final ResponseData responseData) {
        String charset = responseData.getCharSet();
        if (charset == null) {

        return asStream(id)//
                .header("Pragma", "no-cache")//
                .header("Cache-Control", "no-cache")//
                .header("Expires", "Thu, 01 Dec 1994 16:00:00 GMT")//
                .header("Content-Type", "application/x-ndjson")//
                .stream(out -> {

        response.header("Pragma", "no-cache");
        response.header("Cache-Control", "no-cache");
        response.header("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");
        response.contentTypeOctetStream();
        return response.stream(out -> {
            try {
                downloadObject(getObjectName(pi.getPath(), pi.getName()), out);