code: def incremental(self, start_time, **kwargs):
          
          return self._query_zendesk(self.endpoint.incremental, self.object_type, start_time=start_time, **kwargs)
docs: Retrieve bulk data from the chat incremental API.
  
          :param fields: list of fields to retrieve. `Chat API Docs
              <https://developer.zendesk.com/rest_api/docs/chat/incremental_export#usage-notes-resource-expansion>`__.
          :param start_time: The time of the oldest object you are interested in.