Man pages matching name app::cmd::tester::captureexternal in section 3pm:

App::Cmd::Tester::CaptureExternal.3pm.en	debian 10 / libapp-cmd-perl
App::Cmd::Tester::CaptureExternal.3pm.en	debian 11 / libapp-cmd-perl
App::Cmd::Tester::CaptureExternal.3pm.en	debian 12 / libapp-cmd-perl