Man pages matching name metacpan::client::package in section 3pm:

MetaCPAN::Client::Package.3pm.en	debian 10 / libmetacpan-client-perl
MetaCPAN::Client::Package.3pm.en	debian 11 / libmetacpan-client-perl
MetaCPAN::Client::Package.3pm.en	debian 12 / libmetacpan-client-perl