Man pages matching name bio::factory::treefactoryi in section 3pm:

Bio::Factory::TreeFactoryI.3pm.en	debian 10 / libbio-perl-perl
Bio::Factory::TreeFactoryI.3pm.en	debian 11 / libbio-perl-perl
Bio::Factory::TreeFactoryI.3pm.en	debian 12 / libbio-perl-perl