code: def refresh(self, **kwargs):
          
          if self._id_attr:
              path = '%s/%s' % (self.manager.path, self.id)
          else:
              path = self.manager.path
          server_data = self.manager.gitlab.http_get(path, **kwargs)
          self._update_attrs(server_data)
docs: Refresh a single object from server.
  
          Args:
              **kwargs: Extra options to send to the server (e.g. sudo)
  
          Returns None (updates the object)
  
          Raises:
              GitlabAuthenticationError: If authentication is not correct
              GitlabGetError: If the server cannot perform the request