fn process_device_control_request(
state: &mut ControlLoopState<'_>,
tube: &Tube,
request: DeviceControlRequest,
add_tubes: &mut Vec<TaggedControlTube>,
) -> Result<()>fn process_device_control_request(
state: &mut ControlLoopState<'_>,
tube: &Tube,
request: DeviceControlRequest,
add_tubes: &mut Vec<TaggedControlTube>,
) -> Result<()>