Man pages matching name net::trac::mechanize in section 3pm:

Net::Trac::Mechanize.3pm.en	debian 10 / libnet-trac-perl
Net::Trac::Mechanize.3pm.en	debian 11 / libnet-trac-perl
Net::Trac::Mechanize.3pm.en	debian 12 / libnet-trac-perl