Man pages matching name pdf::api2::resource::font::corefont in section 3pm:

PDF::API2::Resource::Font::CoreFont.3pm.en	debian 10 / libpdf-api2-perl
PDF::API2::Resource::Font::CoreFont.3pm.en	debian 11 / libpdf-api2-perl
PDF::API2::Resource::Font::CoreFont.3pm.en	debian 12 / libpdf-api2-perl