static ELandscapeImportResult GetWeightmapImportData ( const [FLandscapeImportDescriptor](API\Editor\LandscapeEditor\FLandscapeImportDescriptor) & ImportDescriptor, int32 DescriptorIndex, [FName](API\Runtime\Core\UObject\FName) LayerName, [TArray](API\Runtime\Core\Containers\TArray)< uint8 > & OutData, [FText](API\Runtime\Core\Internationalization\FText) & OutMessage )