HTML::TreeBuilder is bit slow for some use case.
and, XML::LibXML is very fast! I want to use it.
But, some libraries uses HTML::TreeBuilder.

HTML::TreeBuilder::LibXML is drop-in-replacement
for HTML::TreeBuilder::XPath.

Currently, this module implements good enough methods
for work with Web::Scraper.

WWW: http://search.cpan.org/dist/HTML-TreeBuilder-LibXML/