code: def _build_demux_document_scraper(cls, session: AppSession):
          '''Create demux document scraper.'''
          session.factory.new(
              'DemuxDocumentScraper', cls._build_document_scrapers(session)f _build_demux_document_scraper(cls, session: AppSession):
          '''Create demux document scraper.'''
          session.factory.new(
              'DemuxDocumentScraper', cls._build_document_scrapers(session))
docs: Create demux document scraper.