title: Continuation token - CreateDocumentQuery ExecuteNextAsync function not exist
body: <p>I develop in c# in azure documentDB platform .
  I try to implement paging architecture in my application .
  My code : </p>
  
  <pre><code>var userQuery = _client.CreateDocumentQuery&lt;User&gt;(
                  _uriUsersCollection, queryStr, options).AsDocumentQuery();
  </code></pre>
  
  <p>my code show error on the  AsDocumentQuery() function (it's not recognize as part of the IQueryable methods (I see several example in the internet that the function is recognize ).So when I try to activate the query.ExecuteNextAsync it is not exist.
  I work with Microsoft.Azure.Documents.Client dll version 1.11.0.0.
  Thanks for your help
  MAK</p>