Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Xml/System/Xml/EmptyEnumerator.cs

@@ -0,0 +1,28 @@
+//------------------------------------------------------------------------------
+// <copyright file="EmptyEnumerator.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Collections;
+
+namespace System.Xml {
+
+    internal sealed class EmptyEnumerator : IEnumerator {
+
+        bool IEnumerator.MoveNext() {
+            return false;
+        }
+
+        void IEnumerator.Reset() {
+        }
+
+        object IEnumerator.Current {
+            get {
+                throw new InvalidOperationException( Res.GetString( Res.Xml_InvalidOperation ) );
+            }
+        }
+    }
+}