title: Where does Microsoft.Practices.ServiceLocation come from?
body: <p>Does any one know where <code>Microsoft.Practices.ServiceLocation</code> comes from? This is a namespace and a dll used in MS EnterpriseLibrary. Admittedly it's a very simple dll with just a handful of classes (using reflector), but I can't find published source code for it. It's not in Enterprise Library project and not in Unity project.</p>
  
  <p>So does someone know if the source code for this was published and where? And also why is it not part of Unity? Is it used anywhere else?</p>