Man pages matching name dbm::deep::storage::file in section 3pm:

DBM::Deep::Storage::File.3pm.en	debian 10 / libdbm-deep-perl
DBM::Deep::Storage::File.3pm.en	debian 11 / libdbm-deep-perl
DBM::Deep::Storage::File.3pm.en	debian 12 / libdbm-deep-perl