docs: protected void layoutGroupSubreports(DJGroup columnsGroup, JRDesignGroup jgroup) {
  		log.debug("Starting subreport layout...");
  		JRDesignBand footerBand = (JRDesignBand) ((JRDesignSection)jgroup.getGroupFooterSection()).getBandsList().get(0);
  		JRDesignBand headerBand = (JRDesignBand) ((JRDesignSection)jgroup.getGroupHeaderSection()).getBandsList().get(0);
  
  		layOutSubReportInBand(columnsGroup, headerBand, DJConstants.HEADER);
  		layOutSubReportInBand(columnsGroup, footerBand, DJConstants.FOOTER);
  
  	}