code: def followers(request, content_type_id, object_id, flag):
      
      ctype = get_object_or_404(ContentType, pk=content_type_id)
      instance = get_object_or_404(ctype.model_class(), pk=object_id)
      flag = flag or ''
  
      return render(
          request,
          'actstream/followers.html',
          {
              'followers': models.followers(instance, flag=flag),
              'actor': instance,
          }
      )
docs: Creates a listing of ``User``s that follow the actor defined by
      ``content_type_id``, ``object_id``.