code: async def open(self) -> 'Issuer':
          
  
          LOGGER.debug('Issuer.open >>>')
  
          await super().open()
          for path_rr_id in Tails.links(self._dir_tails, self.did):
              await self._sync_revoc(basename(path_rr_id))
  
          LOGGER.debug('Issuer.open <<<')
          return self
docs: Explicit entry. Perform ancestor opening operations,
          then synchronize revocation registry to tails tree content.
  
          :return: current object