[ntuple] NFC: add todo comment
[ntuple] NFC: add todo comment

root-mirror/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,karies/root,karies/root,root-mirror/root,karies/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,olifre/root