Man pages matching name pmprintlabelsets in section 3:

pmPrintLabelSets.3.en	debian 10 / libpcp3-dev
pmprintlabelsets.3.en	debian 10 / libpcp3-dev
pmPrintLabelSets.3.en	debian 11 / libpcp3-dev
pmPrintLabelSets.3.en	debian 12 / libpcp3-dev