title: NameSpace for ICallHandler in 4.6.1 framework?
body: <p>Please do let me know the  <code>NameSpace</code> for   ICallHandler in <strong>4.6.1</strong> framework??</p>
  
  <p>Earlier it was in <code>Microsoft.Practices.Unity.InterceptionExtension</code></p>
  
  <p>I am using unity 4.0 version</p>