public void ExitLogsEventWithNullRequest()
 {
     EtwTracingHelper("Exit", new[] {"InvocationId", "ReturnValue"},
         () =>
         {
             EtwTracingInterceptor etwTracer = new EtwTracingInterceptor();
             etwTracer.ExitMethod(null, null);
         },
         dict =>
         {
             Assert.Equal("", dict["InvocationId"]);
             Assert.Equal("", dict["ReturnValue"]);
         });
 }