Man pages matching name weasel::widgethandlers in section 3pm:

Weasel::WidgetHandlers.3pm.en	debian 10 / libweasel-perl
Weasel::WidgetHandlers.3pm.en	debian 11 / libweasel-perl
Weasel::WidgetHandlers.3pm.en	debian 12 / libweasel-perl