Man pages matching name statistics::test::randomwalk in section 3pm:

Statistics::Test::RandomWalk.3pm.en	debian 10 / libstatistics-test-randomwalk-perl
Statistics::Test::RandomWalk.3pm.en	debian 11 / libstatistics-test-randomwalk-perl
Statistics::Test::RandomWalk.3pm.en	debian 12 / libstatistics-test-randomwalk-perl