code: def get_revision_limit(self):
          
          url = '/'.join((self.database_url, '_revs_limit'))
          resp = self.r_session.get(url)
          resp.raise_for_status()
  
          try:
              ret = int(resp.text)
          except ValueError:
              raise CloudantDatabaseException(400, response_to_json_dict(resp))
  
          return ret
docs: Retrieves the limit of historical revisions to store for any single
          document in the current remote database.
  
          :returns: Revision limit value for the current remote database