protected function exportModule($moduleName)
 {
     $manifest_filePath = false;
     $moduleInstance = Vtiger_Module::getInstance($moduleName);
     if (!empty($moduleInstance)) {
         require_once "vtlib/Vtiger/PackageExport.php";
         $export = new Vtiger_PackageExport();
         $export->__initExport($moduleName, $moduleInstance);
         $export->export_Module($moduleInstance);
         $export->__finishExport();
         $manifest_filePath = $export->__getManifestFilePath();
     }
     return $manifest_filePath;
 }