Man pages matching name xml::filter::docsplitter in section 3pm:

XML::Filter::DocSplitter.3pm.en	debian 10 / libxml-sax-machines-perl
XML::Filter::DocSplitter.3pm.en	debian 11 / libxml-sax-machines-perl
XML::Filter::DocSplitter.3pm.en	debian 12 / libxml-sax-machines-perl