Man pages matching name perl::critic::policy::compatibility::gtk2constants in section 3pm:

Perl::Critic::Policy::Compatibility::Gtk2Constants.3pm.en	debian 10 / libperl-critic-pulp-perl
Perl::Critic::Policy::Compatibility::Gtk2Constants.3pm.en	debian 11 / libperl-critic-pulp-perl
Perl::Critic::Policy::Compatibility::Gtk2Constants.3pm.en	debian 12 / libperl-critic-pulp-perl