Can read-only transactions be traced?

Hi there,

I am experimenting with OpenTelemetry tracing and I was wondering: how does one mark a read-only transaction for tracing, for example when implementing propagation?

From the documentation I see that it would be necessary to write the special key \xff\xff/tracing/token but that is not possible for read-only transactions?

Thanks for any insight!

Replying to self: it seems possible via SetSpanParent, I opened a PR to improve documentation here: Document format for SetSpanParent by gm42 · Pull Request #11350 · apple/foundationdb · GitHub