docs: def _head(self, client_kwargs):
          """
          Returns object HTTP header.
  
          Args:
              client_kwargs (dict): Client arguments.
  
          Returns:
              dict: HTTP header.
          """
          with _handle_client_exception():
              # Object
              if 'obj' in client_kwargs:
                  return self.client.head_object(**client_kwargs)
  
              # Container
              return self.client.head_container(**client_kwargs)