code: def sync_files(self, dataset_key):
          
          try:
              self._datasets_api.sync(*(parse_dataset_key(dataset_key)))
          except _swagger.rest.ApiException as e:
              raise RestApiError(cause=e)
docs: Trigger synchronization process to update all dataset files linked to
          source URLs.
  
          :param dataset_key: Dataset identifier, in the form of owner/id
          :type dataset_key: str
          :raises RestApiException: If a server error occurs
  
          Examples
          --------
          >>> import datadotworld as dw
          >>> api_client = dw.api_client()
          >>> api_client.sync_files('username/test-dataset')  # doctest: +SKIP