[O] Creating a link to a file using ID

[Yuri Niyazov]

I would like to link to a whole file (rather than a heading in that
file), but instead of using the path+name, I would like to use an id,
so that it survives renames. Is it possible to assign an ID to the
whole buffer? I tried doing
#+CUSTOM_ID:       A948A2E7-F4A0-4F77-8D7A-C6273DA7D734
and
#+ID:       A948A2E7-F4A0-4F77-8D7A-C6273DA7D734

but a link to such an ID results in an error when clicked. I am going
to link to a heading in the file instead for now, but it would be nice
to know if this is possible. Thanks!