static void StartPlayFromHere ( const [TOptional](API\Runtime\Core\IO\TOptional)< FVector > & Location, const [TOptional](API\Runtime\Core\IO\TOptional)< FRotator > & Rotation, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IAssetViewport](API\Editor\UnrealEd\IAssetViewport) > & ActiveLevelViewport )