Man pages matching name lemonldap::ng::handler::apachemp2::fcgiclient in section 3pm:

Lemonldap::NG::Handler::ApacheMP2::FCGIClient.3pm.en	debian 10 / liblemonldap-ng-handler-perl
Lemonldap::NG::Handler::ApacheMP2::FCGIClient.3pm.en	debian 11 / liblemonldap-ng-handler-perl