Index: Tools/Google.Apis.Utils/Trace/TraceExtensions.cs
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+/*
+Copyright 2013 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+using System.Diagnostics;
+using System.Threading;
+
+namespace Google.Apis.Utils.Trace
+{
+    /// <summary>Extension methods to <seealso cref="System.Diagnostics.TraceSource"/>.</summary>
+    public static class Extensions
+    {
+        /// <summary>Traces the event using the current thread id.</summary>
+        public static void TraceEvent(this TraceSource trace, TraceEventType type, string msg, params object[] args)
+        {
+            trace.TraceEvent(type, Thread.CurrentThread.ManagedThreadId, msg, args);
+        }
+    }
+}