Man pages matching name sys::virt::domainsnapshot in section 3pm:

Sys::Virt::DomainSnapshot.3pm.en	debian 10 / libsys-virt-perl
Sys::Virt::DomainSnapshot.3pm.en	debian 11 / libsys-virt-perl
Sys::Virt::DomainSnapshot.3pm.en	debian 12 / libsys-virt-perl