Man pages matching name pithub::issues::milestones in section 3pm:

Pithub::Issues::Milestones.3pm.en	debian 10 / libpithub-perl
Pithub::Issues::Milestones.3pm.en	debian 11 / libpithub-perl
Pithub::Issues::Milestones.3pm.en	debian 12 / libpithub-perl