Man pages matching name params::callbackrequest in section 3pm:

Params::CallbackRequest.3pm.en	debian 10 / libparams-callbackrequest-perl
Params::CallbackRequest.3pm.en	debian 11 / libparams-callbackrequest-perl
Params::CallbackRequest.3pm.en	debian 12 / libparams-callbackrequest-perl