code: def _get_uuid(self, context, issuer, id):
          
          data = {
              "idp": issuer,
              "id": id,
              "redirect_endpoint": "%s/account_linking%s" % (self.base_url, self.endpoint)
          }
          jws = JWS(json.dumps(data), alg=self.signing_key.alg).sign_compact([self.signing_key])
  
          try:
              request = "{}/get_id?jwt={}".format(self.api_url, jws)
              response = requests.get(request)
          except Exception as con_exc:
              msg = "Could not connect to account linking service"
              satosa_logging(logger, logging.CRITICAL, msg, context.state, exc_info=True)
              raise SATOSAAuthenticationError(context.state, msg) from con_exc
  
          if response.status_code not in [200, 404]:
              msg = "Got status code '%s' from account linking service" % (response.status_code)
              satosa_logging(logger, logging.CRITICAL, msg, context.state)
              raise SATOSAAuthenticationError(context.state, msg)
  
          return response.status_code, response.text
docs: Ask the account linking service for a uuid.
          If the given issuer/id pair is not linked, then the function will return a ticket.
          This ticket should be used for linking the issuer/id pair to the user account
  
          :type context: satosa.context.Context
          :type issuer: str
          :type id: str
          :rtype: (int, str)
  
          :param context: The current context
          :param issuer: the issuer used for authentication
          :param id: the given id
          :return: response status code and message
              (200, uuid) or (404, ticket)