docs: def delete_object(self, container, obj, **kwargs):
          """Delete object in container
  
          :param container: container name (Container is equivalent to
                            Bucket term in Amazon).
          :param obj: object name (Object is equivalent to
                      Key term in Amazon).
          """
          try:
              LOG.debug('delete_object() with %s is success.', self.driver)
              return self.driver.delete_object(container, obj, **kwargs)
          except DriverException as e:
              LOG.exception('download_object() with %s raised\
                              an exception %s.', self.driver, e)