代码修改后的版本，全部提交

COSXML/Model/Bucket/GetBucketVersioningRequest.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+
+using System.Text;
+using COSXML.Common;
+
+namespace COSXML.Model.Bucket
+{
+    public sealed class GetBucketVersioningRequest : BucketRequest
+    {
+        public GetBucketVersioningRequest(string bucket) : base(bucket)
+        {
+            this.method = CosRequestMethod.GET;
+            this.queryParameters.Add("versioning", null);
+        }
+    }
+}