code: def model(request, content_type_id):
      
      ctype = get_object_or_404(ContentType, pk=content_type_id)
      model_class = ctype.model_class()
      return render(
          request,
          'actstream/actor.html',
          {
              'action_list': models.model_stream(model_class),
              'ctype': ctype,
              'actor': model_class
          }
      )
docs: ``Actor`` focused activity stream for actor defined by ``content_type_id``,
      ``object_id``.