code: def raise_exception(self, original_exception=None):
          
          if self._executed_retries < self._max_retries:
              curr_backoff = self._ms_backoff
              self._executed_retries += 1
              self._ms_backoff = self._ms_backoff * 2
              raise ActionRetryException(curr_backoff)
          else:
              raise original_exception or Exception()
docs: Raise a retry exception if under the max retries. After, raise the
          original_exception provided to this method or a generic Exception if
          none provided.