[EKeySelectionPreviewState](API\Editor\SequencerCore\MVVM\Views\UE__Sequencer__EKeySelectionPrev-) GetPreviewSelectionState ( const [TViewModelPtr](API\Editor\SequencerCore\TViewModelPtr)< [IKeyExtension](API\Editor\SequencerCore\MVVM\Extensions\IKeyExtension) > &, [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) ) const