code: async def close(self) -> None:
          
  
          LOGGER.debug('OrgHubAnchor.close >>>')
  
          archive_caches = False
          if self.config.get('archive-holder-prover-caches-on-close', False):
              archive_caches = True
              await self.load_cache_for_proof(False)
          if self.config.get('archive-verifier-caches-on-close', {}):
              archive_caches = True
              await self.load_cache_for_verification(False)
          if archive_caches:
              ArchivableCaches.archive(self.dir_cache)
              ArchivableCaches.purge_archives(self.dir_cache, True)
  
          # Do not close wallet independently: allow for sharing open wallet over many anchor lifetimes
          # await self.wallet.close() #1.7.8
          # Do not close pool independently: let relying party decide when to go on-line and off-line
  
          for path_rr_id in Tails.links(self._dir_tails):
              rr_id = basename(path_rr_id)
              try:
                  await HolderProver._sync_revoc_for_proof(self, rr_id)
              except ClosedPool:
                  LOGGER.warning('OrgHubAnchor sync-revoc on close required ledger for %s but pool was closed', rr_id)
  
          LOGGER.debug('OrgHubAnchor.close <<<')
docs: Explicit exit. If so configured, populate cache to prove for any creds on schemata,
          cred defs, and rev regs marked of interest in configuration at initialization,
          archive cache, and purge prior cache archives.
  
          :return: current object