class FSequenceModel : public [UE::Sequencer::FViewModel](API\Editor\SequencerCore\MVVM\ViewModels\FViewModel), public [UE::Sequencer::ISortableExtension](API\Editor\SequencerCore\MVVM\Extensions\ISortableExtension), public [UE::Sequencer::IOutlinerDropTargetOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerDropTargetOutlinerExten-), public [UE::MovieScene::ISignedObjectEventHandler](API\Runtime\MovieScene\EventHandlers\ISignedObjectEventHandler)