docs: def get_template_names(self):
          """Switch the templates for Ajax requests."""
          request = self.request
          querystring_key = request.REQUEST.get('querystring_key', PAGE_LABEL)
          if request.is_ajax() and querystring_key == self.key:
              return [self.page_template]
          return super(
              AjaxMultipleObjectTemplateResponseMixin, self).get_template_names()