try {
            resultData.setData(content.getBytes(charsetName));
        } catch (final UnsupportedEncodingException e) {
            if (logger.isInfoEnabled()) {
                logger.info("Invalid charsetName: " + charsetName + ". Changed to " + Constants.UTF_8, e);
            }
            charsetName = Constants.UTF_8;
            resultData.setData(content.getBytes(Constants.UTF_8_CHARSET));
        }

        final AccessResultDataImpl accessResultData = new AccessResultDataImpl();
        accessResultData.setTransformerName("textTransformer");
        accessResultData.setData("xyz".getBytes());

        final Object obj = textTransformer.getData(accessResultData);
        assertNotNull(obj);
        assertTrue(obj instanceof String);
        assertEquals("xyz", obj.toString());
    }

        final ResultData resultData = fileTransformer.transform(responseData);
        assertEquals("http_CLN_/www.example.com/submit_QUEST_a=1_AMP_b=2", new String(resultData.getData(), "UTF-8"));
        final File file = new File(fileTransformer.baseDir, new String(resultData.getData(), "UTF-8"));
        assertEquals("xyz", new String(FileUtil.readBytes(file)));
    }

    public void test_createFile() throws Exception {

     *
     * @see org.codelibs.fess.crawler.entity.AccessResultData#getData()
     */
    @Override
    public byte[] getData() {
        return data;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.AccessResultData#setData(java.lang.String)
     */
    @Override
    public void setData(final byte[] data) {
        this.data = data;
    }

    @Override

        final AccessResultDataImpl accessResultData = new AccessResultDataImpl();
        accessResultData.setTransformerName("binaryTransformer");
        accessResultData.setData("xyz".getBytes());

        final Object obj = binaryTransformer.getData(accessResultData);
        assertNotNull(obj);
        assertTrue(obj instanceof InputStream);
        assertEquals("xyz", new String(IOUtils.toByteArray((InputStream) obj)));
    }

 * and then reads the body into a byte array. This byte array is then set as the data
 * in the ResultData object.
 * </p>
 *
 * <p>
 * The getData method takes an AccessResultData object, checks if the transformer name matches,
 * and then returns the data as a ByteArrayInputStream.
 * </p>
 */
public class BinaryTransformer extends AbstractTransformer {

    /**

     */
    byte[] getData();

    /**
     * Retrieves the data as a String.
     *
     * @return the data in String format.
     */
    String getDataAsString();

    /**
     * Sets the data for this AccessResultData instance.
     *
     * @param data the byte array containing the data to be set
     */
    void setData(byte[] data);

    /**

     */
    public void setSerializer(final Function<Object, byte[]> serializer) {
        this.serializer = serializer;
    }

    /**
     * Get the data.
     * @return data
     */
    public byte[] getData() {
        if (data == null) {
            if (serializer == null || rawData == null) {
                throw new CrawlerSystemException("serializer or rawData is null");
            }

     *
     * @param accessResultData the AccessResultData object containing the data to be retrieved
     * @return an Object representing the data retrieved from the AccessResultData
     */
    Object getData(AccessResultData<?> accessResultData);

    /**
     * Retrieves the name associated with this transformer.
     *
     * @return the name of the transformer
     */
    String getName();

        resultData.setRawData(rawData);

        // ## Assert ##
        assertEquals(rawData, resultData.getRawData());

        assertNull(resultData.serializer);
        try {
            resultData.getData();
            fail();
        } catch (CrawlerSystemException e) {
            // nothing
        }
    }

    public void test_setSerializer() {
        // ## Arrange ##