Man pages matching name json::maybexs in section 3pm:

JSON::MaybeXS.3pm.en	debian 10 / libjson-maybexs-perl
JSON::MaybeXS.3pm.en	debian 11 / libjson-maybexs-perl
JSON::MaybeXS.3pm.en	debian 12 / libjson-maybexs-perl