Man pages matching name graphviz::parse::yapp in section 3pm:

GraphViz::Parse::Yapp.3pm.en	debian 10 / libgraphviz-perl
GraphViz::Parse::Yapp.3pm.en	debian 11 / libgraphviz-perl
GraphViz::Parse::Yapp.3pm.en	debian 12 / libgraphviz-perl