class FChannelGroupOutlinerModel : public [UE::Sequencer::TOutlinerModelMixin< FChannelGroupModel >](API\Editor\Sequencer\MVVM\ViewModels\TOutlinerModelMixin), public [UE::Sequencer::ICompoundOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\ICompoundOutlinerExtension), public [UE::Sequencer::IDeletableExtension](API\Editor\SequencerCore\MVVM\Extensions\IDeletableExtension)