void ExpandCollapseNode ( [TViewModelPtr](API\Editor\SequencerCore\TViewModelPtr)< [IOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerExtension) > InDataModel, bool bExpansionState, [ETreeRecursion](API\Editor\SequencerCore\MVVM\Views\UE__Sequencer__ETreeRecursion) Recursion )