Man pages matching name catalystx::leakchecker in section 3pm:

CatalystX::LeakChecker.3pm.en	debian 10 / libcatalystx-leakchecker-perl
CatalystX::LeakChecker.3pm.en	debian 11 / libcatalystx-leakchecker-perl
CatalystX::LeakChecker.3pm.en	debian 12 / libcatalystx-leakchecker-perl