def METHOD_NAME(self, config: Config) -> Dict[str, Scalar]:
    """Return a client's set of properties.
    Parameters
    ----------
    config : Config
        Configuration parameters requested by the server.
        This can be used to tell the client which properties
        are needed along with some Scalar attributes.
    Returns
    -------
    properties : Dict[str, Scalar]
        A dictionary mapping arbitrary string keys to values of type
        bool, bytes, float, int, or str. It can be used to communicate
        arbitrary property values back to the server.
    """
    _ = (self, config)
    return {}