PQregisterResult(3) on Linux
The text 136a109c29b8, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
Registers sub-classes, composites and user-defined types found within a PGresult.