virtual [TOptional](API\Runtime\Core\IO\TOptional)< [UE::Interchange::FImportSlicedImage](API\Plugins\InterchangeImport\Texture\FImportSlicedImage) > GetSlicedTexturePayloadData ( const [UInterchangeSourceData](API\Runtime\InterchangeCore\UInterchangeSourceData) * SourceData, const [FString](API\Runtime\Core\Containers\FString) & PayloadKey ) const