Man pages matching name test::www::mechanize::psgi in section 3pm:

Test::WWW::Mechanize::PSGI.3pm.en	debian 10 / libtest-www-mechanize-psgi-perl
Test::WWW::Mechanize::PSGI.3pm.en	debian 11 / libtest-www-mechanize-psgi-perl
Test::WWW::Mechanize::PSGI.3pm.en	debian 12 / libtest-www-mechanize-psgi-perl