def METHOD_NAME(self, config, config_name="manual"):
    """Add a config dict describing the log file config.
    Args:
        config (dict): a single dict with the config needed for setting
            up the streamer.
        config_name (str): the name of the config to be added. This is
            optional, with the default value set to "manual".
    """
    self._data[config_name] = config