code: def index_view(self, request):
          
          kwargs = {'model_admin': self}
          view_class = self.index_view_class
          return view_class.as_view(**kwargs)(request)
docs: Instantiates a class-based view to provide listing functionality for
          the assigned model. The view class used can be overridden by changing
          the 'index_view_class' attribute.