virtual [TTuple](API\Runtime\Core\Misc\TTuple)< [UE::Interchange::FAssetImportResultPtr](API\Runtime\InterchangeEngine\FAssetImportResultPtr), [UE::Interchange::FSceneImportResultPtr](API\Runtime\InterchangeEngine\FSceneImportResultPtr) > StartStep ( [FInterchangeImportTestData](API\Plugins\InterchangeTests\FInterchangeImportTestData) & Data )