I get the following warning:

[warn]: in YARD::Handlers::Ruby::MixinHandler: Undocumentable mixin: YARD::Parser::UndocumentableError for class FacebookImporter

when attempting to parse:

include Addressbook::Application.routes.url_helpers

This makes sense since yard can't infer the semantics of what #url_helpers should return, but would it be reasonable to return the unparsable mixin verbatim without linking it? In the meantime, is there a tag to force yard to ignore this line and suppress the warning?