def METHOD_NAME(self, iditem, archived=None):
    """
    Gets a list of work items or a single work item.
    :param iditem: When specified, the ID of a single item to retrieve.
    :param archived: When specified, either archived or non-archived items are
                     returned. Otherwise, all items are returned.
    :return: A list of work items and an HTTP result code.
    """
    result = 200
    try:
        if iditem is None:
            print(f"archived: {archived}")
            work_items = self.storage.get_work_items(archived)
        else:
            work_items = [self.storage.get_work_item(iditem)]
        schema = WorkItemSchema(many=True)
        response = schema.dump(work_items)
    except DataServiceNotReadyException as err:
        logger.error(err)
        response = jsonify("Data service not ready. Wait a minute and try again.")
        result = 503
    except StorageError as err:
        logger.error("Storage error when trying to get work items: %s", err)
        response = jsonify("A storage error occurred.")
        result = 500
    return response, result