async def METHOD_NAME(self, name: str) -> Any:
    """ Get a setting from the database. At the moment, only
        'server_version', the version of the database software, can
        be retrieved with this function.
        Raises a ValueError if the property does not exist.
    """
    if name != 'server_version':
        raise ValueError(f"DB setting '{name}' not found in database.")
    return self._property_cache['DB:server_version']