Code to create .xoml file from WF workflow using C#

Here is the simple code to create .xoml file from WF workflow;

using (XmlWriter writer = XmlWriter.Create(@"D:\Temp\MyWorkflow.xoml"))
            {
                WorkflowMarkupSerializer serializer = new WorkflowMarkupSerializer();
                SimpleWorkFlow sm = new SimpleWorkFlow();

                serializer.Serialize(writer, sm);
            }