private void parseSummaryInformation(DirectoryNode root, Metadata metadata)
            throws TikaException {

        try {
            Entry summaryEntry = root.getEntry("\u0005HwpSummaryInformation");

            populateMatadata(summaryEntry, metadata);

        } catch (NoPropertySetStreamException | IOException e) {
            throw new UnsupportedFormatException("cannot parse the Summary Information");
        }

    }
extract Text from HWP Stream.

@param source
@param metadata
@param xhtml
@return
@throws FileNotFoundException
@throws IOException
@throws SAXException
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-miscoffice-module/src/main/java/org/apache/tika/parser/hwp/HwpTextExtractorV5.java