代码修改后的版本，全部提交

COSXML/Common/CosMetaDataDirective.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+
+using System.Text;
+using COSXML.Common;
+using COSXML.Utils;
+/**
+* Copyright (c) 2018 Tencent Cloud. All rights reserved.
+* 11/2/2018 2:49:33 PM
+* bradyxiao
+*/
+namespace COSXML.Common
+{
+    public enum CosMetaDataDirective
+    {
+        [CosValue("Copy")]
+        COPY = 0,
+
+        [CosValue("Replaced")]
+        REPLACED
+    }
+}