code: public void writePageLayoutStyles(final XMLUtil util, final Appendable appendable)
              throws IOException {
          for (final PageLayoutStyle ps : this.pageLayoutStylesContainer.getValues()) {
              assert ps.isHidden();
              ps.appendXMLToAutomaticStyle(util, appendable);
          }
      }
docs: Write the page layout styles. The page layout will always belong to to styles
  .xml/automatic-styles, since
  it's an automatic style (see 16.5) and it is not "used in a document" (3.1.3.2)
  
  @param util   an util
  @param appendable the destination
  @throws IOException if an I/O error occurs