Man pages matching name config::model::backend::cdsfile in section 3pm:

Config::Model::Backend::CdsFile.3pm.en	debian 10 / libconfig-model-perl
Config::Model::Backend::CdsFile.3pm.en	debian 11 / libconfig-model-perl
Config::Model::Backend::CdsFile.3pm.en	debian 12 / libconfig-model-perl