Man pages matching name poe::loop::tkactivestate in section 3pm:

POE::Loop::TkActiveState.3pm.en	debian 10 / libpoe-loop-tk-perl
POE::Loop::TkActiveState.3pm.en	debian 11 / libpoe-loop-tk-perl
POE::Loop::TkActiveState.3pm.en	debian 12 / libpoe-loop-tk-perl