def __init__(self, communicator, iter_req, resp_converter):
     self._communicator = communicator
     self._iter_req = iter_req
     self._response_iterator = self._communicator.iteration_request(
         RequestBuilder.iter_req_to_tx_req(self._iter_req), end_of_batch)
     self._done = False
     self._resp_converter = resp_converter
 def _request_next_batch(self, iter_id):
     self._response_iterator = self._communicator.iteration_request(
         RequestBuilder.iter_req_to_tx_req(
             RequestBuilder.continue_iterating(iter_id,
                                               self._iter_req.options)),
         end_of_batch)