static void SetOrAddKey ( [TMovieSceneChannelData](API\Runtime\MovieScene\Channels\TMovieSceneChannelData)< [FMovieSceneDoubleValue](API\Runtime\MovieScene\Channels\FMovieSceneDoubleValue) > & ChannelData, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) Time, double Value, const EMovieSceneKeyInterpolation Interpolation )