Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Linq/SqlClient/Common/SqlNodeAnnotation.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Data.Linq.SqlClient {
+
+    /// <summary>
+    /// Annotation about a particular SqlNode.
+    /// </summary>
+    internal abstract class SqlNodeAnnotation {
+        string message;
+        internal SqlNodeAnnotation(string message) {
+            this.message = message;
+        }
+        internal string Message {
+            get {return this.message;}
+        }
+    }
+}