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