FViewportThumbnailSection ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [ISequencer](API\Editor\Sequencer\ISequencer) > InSequencer, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FTrackEditorThumbnailPool](API\Editor\MovieSceneTools\TrackEditorThumbnail\FTrackEditorThumbnailPool) > InThumbnailPool, [UMovieSceneSection](API\Runtime\MovieScene\UMovieSceneSection) & InSection )