code: def _verify_part_number(self):
          
          total = int(math.ceil(self._file_size / self._part_size))
          if total > PartSize.MAXIMUM_TOTAL_PARTS:
              self._status = TransferState.FAILED
              raise SbgError(
                  'Total parts = {}. Maximum number of parts is {}'.format(
                      total, PartSize.MAXIMUM_TOTAL_PARTS)
              )
docs: Verifies that the total number of parts is smaller then 10^5 which
          is the maximum number of parts.