Man pages matching name http::request::ascgi in section 3pm:

HTTP::Request::AsCGI.3pm.en	debian 10 / libhttp-request-ascgi-perl
HTTP::Request::AsCGI.3pm.en	debian 11 / libhttp-request-ascgi-perl
HTTP::Request::AsCGI.3pm.en	debian 12 / libhttp-request-ascgi-perl