Where is postgres_query_duration in the web interface?

Among Checkmk’s checks is supposedly postgres_query_duration, backed by cmk/plugins/collection/agent_based/postgres_query_duration.py. However, where in the web interface is it being used?

The thing is I’d like to propose code for some monitoring points based on running queries (especially: queries which are blocking other queries for too long).

Ah – doh. I have disabled the postgres_query_duration plugin (because it may reveal PIH in CheckMK’s web-interface)…