Man pages matching name pmdiscoverservices in section 3:

pmDiscoverServices.3.en	debian 10 / libpcp3-dev
pmdiscoverservices.3.en	debian 10 / libpcp3-dev
pmDiscoverServices.3.en	debian 11 / libpcp3-dev
pmDiscoverServices.3.en	debian 12 / libpcp3-dev