static async void getBuketAcl() { try { OssClient temp = new OssClient("bm9crcnr0rtnuw8bnrfvq7w8", "RbtJoExTnA8vYLynUfDh7Ior+oM="); AccessControlList test = await temp.GetBucketAcl("mydoc5"); } catch (AggregateException ex) { Console.WriteLine(ex.Message); } }