title: Continuation Task in the same thread as previous
body: <p>I have an WebService that creates a task and a continuation task.</p>
  
  <p>In the first task we set <strong>Thread.CurrentPrincipal</strong></p>
  
  <p>Hence, When the ContinuationTask starts it no longer has the Thread.CurrentPrincipal.</p>
  
  <p>I'd like to specify in the <strong>ContinuationTask</strong> that it <strong>should run in the same thread as its antecedent</strong>. </p>
  
  <p>I've searched the web but i only found the requirement for the thread to run in the SynchronizationContext, therefore i am starting to think I am missing some basic rule, specially regarding how Thread.Principal should work.</p>