code: public static sdx_backup_restore[] factory_default(nitro_service client, sdx_backup_restore[] resources) throws Exception
  	{
  		if(resources == null)
  			throw new Exception("Null resource array");
  		
  		
  		if(resources.length == 1)
  			return ((sdx_backup_restore[]) resources[0].perform_operation(client, "factory_default"));
  		
  		return ((sdx_backup_restore[]) perform_operation_bulk_request(client, resources, "factory_default"));
  	}
docs: <pre>
  Use this operation to Restore factory default in bulk.
  </pre>