if (workbook.getDrawingGroup() != null) dmod |= workbook.getDrawingGroup().hasDrawingsOmitted();
if (workbook.getDrawingGroup() != null) dmod |= workbook.getDrawingGroup().hasDrawingsOmitted();
if (workbook.getDrawingGroup() != null) dmod |= workbook.getDrawingGroup().hasDrawingsOmitted();
if (workbook.getDrawingGroup() != null) dmod |= workbook.getDrawingGroup().hasDrawingsOmitted();