code: async def _set_rev_reg(self, rr_id: str, rr_size: int) -> None:
          
  
          LOGGER.debug('Issuer._set_rev_reg >>> rr_id: %s, rr_size: %s', rr_id, rr_size)
          assert self.rrbx
  
          dir_hopper_rr_id = join(self.rrb.dir_tails_hopper, rr_id)
  
          while Tails.linked(dir_hopper_rr_id, rr_id) is None:
              await asyncio.sleep(1)
          await self._send_rev_reg_def(rr_id)
  
          cd_id = rev_reg_id2cred_def_id(rr_id)
          (next_tag, rr_size_suggested) = Tails.next_tag(self.dir_tails, cd_id)
          rr_id = rev_reg_id(cd_id, next_tag)
          self.rrb.mark_in_progress(rr_id, rr_size or rr_size_suggested)
  
          LOGGER.debug('Issuer._set_rev_reg <<<')
docs: Move precomputed revocation registry data from hopper into place within tails directory.
  
          :param rr_id: revocation registry identifier
          :param rr_size: revocation registry size, in case creation required