docs: def create_container(self, container, **kwargs):
          """Create container
  
          :param container(string): container name (Container is equivalent to
                                    Bucket term in Amazon).
          :param **kwargs(dict): extend args for specific driver.
          """
          try:
              LOG.debug('create_container() with %s is success.', self.driver)
              return self.driver.create_container(container, **kwargs)
          except DriverException as e:
              LOG.exception('create_container() with %s raised\
                              an exception %s.', self.driver, e)