Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/OverloadGroupAttribute.cs

@@ -0,0 +1,57 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities
+{
+    using System;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Runtime;
+
+    [SuppressMessage(FxCop.Category.Design, FxCop.Rule.DefineAccessorsForAttributeArguments,
+    Justification = "The setter is needed to enable XAML serialization of the attribute object.")]
+    [AttributeUsage(AttributeTargets.Property, AllowMultiple = true)]
+    public sealed class OverloadGroupAttribute : Attribute
+    {
+        string groupName;
+
+        public OverloadGroupAttribute()
+        {
+        }
+
+        public OverloadGroupAttribute(string groupName)
+        {
+            if (string.IsNullOrEmpty(groupName))
+            {
+                throw FxTrace.Exception.ArgumentNullOrEmpty("groupName");
+            }
+
+            this.groupName = groupName;
+        }
+
+        public string GroupName
+        {
+            get 
+            { 
+                return this.groupName; 
+            }
+
+            set 
+            {
+                if (string.IsNullOrEmpty(value))
+                {
+                    throw FxTrace.Exception.ArgumentNullOrEmpty("value");
+                }
+                this.groupName = value;
+            }
+        }
+
+        public override object TypeId
+        {
+            get
+            {
+                return this;
+            }
+        }
+    }
+}