Man pages matching name xml::compile::schema::namespaces in section 3pm:

XML::Compile::Schema::NameSpaces.3pm.en	debian 10 / libxml-compile-perl
XML::Compile::Schema::NameSpaces.3pm.en	debian 11 / libxml-compile-perl
XML::Compile::Schema::NameSpaces.3pm.en	debian 12 / libxml-compile-perl