Man pages matching name markdent::role::htmlstream in section 3pm:

Markdent::Role::HTMLStream.3pm.en	debian 10 / libmarkdent-perl
Markdent::Role::HTMLStream.3pm.en	debian 11 / libmarkdent-perl
Markdent::Role::HTMLStream.3pm.en	debian 12 / libmarkdent-perl