int32 DrawExtra ( [FMovieSceneControlRigSpaceChannel](API\Plugins\ControlRig\Sequencer\FMovieSceneControlRigSpaceChanne-) * Channel, const [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) * Owner, const [FSequencerChannelPaintArgs](API\Editor\Sequencer\FSequencerChannelPaintArgs) & PaintArgs, int32 LayerId )