Man pages matching name mixin::extrafields::driver::hashguts in section 3pm:

Mixin::ExtraFields::Driver::HashGuts.3pm.en	debian 10 / libmixin-extrafields-perl
Mixin::ExtraFields::Driver::HashGuts.3pm.en	debian 11 / libmixin-extrafields-perl
Mixin::ExtraFields::Driver::HashGuts.3pm.en	debian 12 / libmixin-extrafields-perl