reek: UtilityFunction triggered on modules with 'extend self'

I’m defining a set of methods inside a module via

module Foo
  module Bar
    extend self
    def do_stuff
      # things
    end
  end
end

Reek triggers the UtilityFunction smell on those methods even though the behaviour should be the same as for:

module Foo
  module Bar
    class << self
      def do_stuff
        # things
      end
    end
  end
end

The latter won’t trigger UtilityFunction as per https://github.com/troessner/reek/issues/112. Should ‘extend self’ also be supported here?

Thanks!