title: How does one set the Id of a WorkflowApplication instance in Workflow 4.0
body: <p>In workflow 3.0-3.5 you could explicitly set the Id of a workflow you start. This feature was particularly useful. I cannot see a way to do this in Workflow 4.0. Does anyone know if this is possible? Since the Id property is read-only and there is no overloaded constructor accepting an Id, the only possible mechanism I see is if there is a magic key that could be used when passing the IDictionary object into the WorkflowApplication constructor.  </p>
  
  <p>Cheers,<br>
  Rohland</p>