Comment 34 for bug 2027716

@douglasbagnall I think so given the footer says
Release: July 18, 2023

The protocol change was documented over a year ago, on 2022-04-29 (or the document we see has no revision at all, that could also be the case). Guess they have the code server side since about then, but only now they enabled it clientside (or even also server side)

just trying to implement (in a lazy way, just to check if this is the solution) the query_level 2
compiling, as always, takes some time...