code: def list_files(self, secure_data_path, limit=None, offset=None):
          
  
          # Make sure that limit and offset are in range.
          # Set the normal defaults
          if not limit or limit <= 0:
              limit = 100
  
          if not offset or offset < 0:
              offset = 0
  
          payload = {'limit': str(limit), 'offset': str(offset)}
  
          # Because of the addition of versionId and the way URLs are constructed, secure_data_path should
          #  always end in a '/'.
          secure_data_path = self._add_slash(secure_data_path)
          secret_resp = get_with_retry(self.cerberus_url + '/v1/secure-files/' + secure_data_path,
                                     params=payload, headers=self.HEADERS)
          throw_if_bad_response(secret_resp)
          return secret_resp.json()
docs: Return the list of files in the path.  May need to be paginated