code: public void writeContent(final XMLUtil xmlUtil, final ZipUTF8Writer writer) throws IOException {
          this.logger.log(Level.FINER, "Writing odselement: contentElement to zip file");
          this.contentElement.write(xmlUtil, writer);
      }
docs: Write the content element to a writer.
  
  @param xmlUtil the xml util
  @param writer  the writer
  @throws IOException if write fails