Man pages matching name pmdagetoptions in section 3:

pmdaGetOptions.3.en	debian 10 / libpcp-pmda3-dev
pmdagetoptions.3.en	debian 10 / libpcp-pmda3-dev
pmdaGetOptions.3.en	debian 11 / libpcp-pmda3-dev
pmdaGetOptions.3.en	debian 12 / libpcp-pmda3-dev