Thread:Support/About including ParserFunctions in MediaWiki messages

Hi. This is to know if it is valid to include a function pertaining to mw:Extension:ParserFunctions (not a standard parser function) in general translations of MediaWiki interface messages here at translatewiki.net. As I understand, it is an optional set of functions, so it should not be a good practice to use them for a general MediaWiki usage. Being more specific, I'm referring to   function.