Man pages matching name gitlab::api::v4::restclient in section 3pm:

GitLab::API::v4::RESTClient.3pm.en	debian 10 / libgitlab-api-v4-perl
GitLab::API::v4::RESTClient.3pm.en	debian 11 / libgitlab-api-v4-perl
GitLab::API::v4::RESTClient.3pm.en	debian 12 / libgitlab-api-v4-perl