<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def list_mutable_configs(pipette_id: str) -> Dict[str, Any]: """ Returns dict of mutable configs only. """

    cfg: Dict[str, Any] = {}

    if pipette_id in known_pipettes():
        config = load_config_dict(pipette_id)
    else:
        log.info('Pipette id {} not found'.format(pipette_id))
        return cfg

    for key in config:
        if key in mutable_configs:
            cfg[key] = config[key]
    return cfg