Man pages matching name html::widgets::navmenu::iterator::sitemap in section 3pm:

HTML::Widgets::NavMenu::Iterator::SiteMap.3pm.en	debian 10 / libhtml-widgets-navmenu-perl
HTML::Widgets::NavMenu::Iterator::SiteMap.3pm.en	debian 11 / libhtml-widgets-navmenu-perl
HTML::Widgets::NavMenu::Iterator::SiteMap.3pm.en	debian 12 / libhtml-widgets-navmenu-perl