Man pages matching name test::html::content::xpathextensions in section 3pm:

Test::HTML::Content::XPathExtensions.3pm.en	debian 10 / libtest-html-content-perl
Test::HTML::Content::XPathExtensions.3pm.en	debian 11 / libtest-html-content-perl
Test::HTML::Content::XPathExtensions.3pm.en	debian 12 / libtest-html-content-perl