CopyUtil.copy(in, out);
                } catch (final IOException e) {
                    throw new WebApiException(HttpServletResponse.SC_BAD_REQUEST, e);
                }
            }
        }).execute()) {

            try (ServletOutputStream out = response.getOutputStream(); InputStream in = curlResponse.getContentAsStream()) {

                }
            }, "ProcessCloser-error-" + sessionId).start();
            new Thread(() -> {
                try {
                    CloseableUtil.closeQuietly(process.getOutputStream());
                } catch (final Exception e) {
                    logger.warn("Could not close a process output stream.", e);
                } finally {
                    latch.countDown();
                }

                    logger.fine(() -> ">>> " + body);
                    connection.setDoOutput(true);
                    try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(connection.getOutputStream(), encoding))) {
                        writer.write(body);
                        writer.flush();
                    }
                } else if (bodyStream != null) {

                    }
                });
                CommonPoolUtil.execute(() -> {
                    try {
                        CloseableUtil.closeQuietly(p.getOutputStream());
                    } catch (final Exception e) {
                        logger.warn("Could not close a process output stream.", e);
                    }
                });

            try (final BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(tempFile)));
                    final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(con.getOutputStream(), Constants.CHARSET_UTF_8))) {
                String line;
                while ((line = br.readLine()) != null) {
                    if (StringUtil.isNotBlank(line)) {

        try (XContentBuilder builder = JsonXContent.contentBuilder().map(firstLineMap)) {
            builder.flush();
            return builder.getOutputStream();
        }
    }

    /**
     * Creates a default ReadingConverter with a chain of converters.
     * The chain includes an AnalyzerConverter and a KatakanaToAlphabetConverter.
     *