[UDatasmithLevelVariantSetsElement](API\Plugins\DatasmithImporter\ObjectElements\UDatasmithLevelVariantSetsElemen-) * FindOrAddElement ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithLevelVariantSetsElement](API\Runtime\DatasmithCore\IDatasmithLevelVariantSetsElemen-) > & InElement )