Man pages matching name mdom::token::whitespace in section 3pm:

MDOM::Token::Whitespace.3pm.en	debian 10 / libmakefile-dom-perl
MDOM::Token::Whitespace.3pm.en	debian 11 / libmakefile-dom-perl
MDOM::Token::Whitespace.3pm.en	debian 12 / libmakefile-dom-perl