expected = "hoge.txt";
        actual = extractor.getFileName(value);
        assertEquals(expected, actual);

        value = "/hoge.txt";
        expected = "hoge.txt";
        actual = extractor.getFileName(value);
        assertEquals(expected, actual);

        value = "fuga/hoge.txt";
        expected = "hoge.txt";
        actual = extractor.getFileName(value);
        assertEquals(expected, actual);

        String extension;
        String filePrefix;
        if (StringUtil.isNotBlank(resourceName)) {
            final String name = getFileName(resourceName);
            final String[] strings = name.split("\\.");
            final StringBuilder buf = new StringBuilder(100);
            if (strings.length > 1) {

            putValue(data, "Disposition", message.getDisposition());
            putValue(data, "Encoding", message.getEncoding());
            putValue(data, "File-Name", message.getFileName());
            putValue(data, "From", message.getFrom());
            putValue(data, "Line-Count", message.getLineCount());
            putValue(data, "Message-ID", message.getMessageID());

        String extention;
        String filePrefix;
        if (StringUtil.isNotBlank(resourceName)) {
            final String name = getFileName(resourceName);
            final String[] strings = name.split("\\.");
            final StringBuilder buf = new StringBuilder(100);
            if (strings.length > 1) {

                            final PDEmbeddedFile embeddedFile = getEmbeddedFile(complexFileSpec);
                            extractFile(complexFileSpec.getFilename(), embeddedFile, writer);
                        }
                    }
                }
            } catch (final IOException e) {
                logger.warn("Failed to parse annotation.", e);
            }