How to use the blackduck.HubRestApi.CreateFailedUnknown function in blackduck

if "location" in response.headers:
                return response.headers["location"]
            else:
                try:
                    response_json = response.json()
                except json.decoder.JSONDecodeError:
                    logging.warning('did not receive any json data back')
                else:
                    if '_meta' in response_json and 'href' in response_json['_meta']:
                        return response_json['_meta']['href']
                    else:
                        return response_json
        elif response.status_code == 412:
            raise CreateFailedAlreadyExists("Failed to create the object because it already exists - url {}, body {}, response {}".format(url, json_body, response))
        else:
            raise CreateFailedUnknown("Failed to create the object for an unknown reason - url {}, body {}, response {}".format(url, json_body, response))

if "location" in response.headers:
                return response.headers["location"]
            else:
                try:
                    response_json = response.json()
                except json.decoder.JSONDecodeError:
                    logging.warning('did not receive any json data back')
                else:
                    if '_meta' in response_json and 'href' in response_json['_meta']:
                        return response_json['_meta']['href']
                    else:
                        return response_json
        elif response.status_code == 412:
            raise CreateFailedAlreadyExists("Failed to create the object because it already exists - url {}, body {}, response {}".format(url, json_body, response))
        else:
            raise CreateFailedUnknown("Failed to create the object for an unknown reason - url {}, body {}, response {}".format(url, json_body, response))