docs: def list_tokens(self, request, **kwargs):
          """List all tokens for this content instance.
  
          :param request: a WSGI request object
          :param kwargs: keyword arguments (optional)
          :return: `rest_framework.response.Response`
          """
  
          # no date checking is done here to make it more obvious if there's an issue with the
          # number of records. Date filtering will be done on the frontend.
          infos = [ObfuscatedUrlInfoSerializer(info).data
                   for info in ObfuscatedUrlInfo.objects.filter(content=self.get_object())]
          return Response(infos, status=status.HTTP_200_OK, content_type="application/json")