Man pages matching name xml::opml::simplegen in section 3pm:

XML::OPML::SimpleGen.3pm.en	debian 10 / libxml-opml-simplegen-perl
XML::OPML::SimpleGen.3pm.en	debian 11 / libxml-opml-simplegen-perl
XML::OPML::SimpleGen.3pm.en	debian 12 / libxml-opml-simplegen-perl