final String content = extractData.getContent();
        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
        for (final String key : extractData.getKeySet()) {
            logger.info("{}={}", key, String.join("|", extractData.getValues(key)));
        }
        assertEquals("4", extractData.getValues("cp:revision")[0]);

        return metadata.get(key);
    }

    /**
     * Gets the set of all metadata keys.
     *
     * @return the set of metadata keys
     */
    public Set<String> getKeySet() {
        return metadata.keySet();
    }

    /**
     * Gets the extracted content.
     *
     * @return the extracted content
     */
    public String getContent() {