Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/System.Json.Microsoft/System.Json/JsonValueChange.cs

@@ -0,0 +1,30 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+namespace System.Json
+{
+    /// <summary>
+    /// Specifies the event type when an event is raised for a <see cref="System.Json.JsonValue"/>.
+    /// </summary>
+    public enum JsonValueChange
+    {
+        /// <summary>
+        /// An element has been or will be added to the collection.
+        /// </summary>
+        Add,
+
+        /// <summary>
+        /// An element has been or will be removed from the collection.
+        /// </summary>
+        Remove,
+
+        /// <summary>
+        /// An element has been or will be replaced in the collection. Used on indexers.
+        /// </summary>
+        Replace,
+
+        /// <summary>
+        /// All elements of the collection have been or will be removed.
+        /// </summary>
+        Clear,
+    }
+}