docs: def delete_view(self, request, object_id, **kwargs):
          """
          Enforce custom delete permissions for the page instance.
          """
          page = get_object_or_404(Page, pk=object_id)
          content_model = page.get_content_model()
          self.check_permission(request, content_model, "delete")
          return super(PageAdmin, self).delete_view(request, object_id, **kwargs)