typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) >[TViewModelPtr](API\Editor\SequencerCore\TViewModelPtr)< [IOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerExtension) >, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SOutlinerViewRow](API\Editor\SequencerCore\MVVM\Views\SOutlinerViewRow) > &)> FOnGenerate