code: def get(self, url, content_type=JSON_CONTENT_TYPE, **kwargs):
          
          with LOG_JWS_GET().context():
              return (
                  DeferredContext(self._send_request(u'GET', url, **kwargs))
                  .addCallback(self._check_response, content_type=content_type)
                  .addActionFinish())
docs: Send GET request and check response.
  
          :param str method: The HTTP method to use.
          :param str url: The URL to make the request to.
  
          :raises txacme.client.ServerError: If server response body carries HTTP
              Problem (draft-ietf-appsawg-http-problem-00).
          :raises acme.errors.ClientError: In case of other protocol errors.
  
          :return: Deferred firing with the checked HTTP response.