getProperties()->setCreator("Sdm-club administrator") ->setLastModifiedBy("Sdm-club administrator") ->setTitle("Office 2007 XLSX Document") ->setSubject("Office 2007 XLSX Document") ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.") ->setKeywords("office 2007 openxml php") ->setCategory("Report file"); } return self::$instance; } }