# File lib/routing_filter/filters/locale.rb, line 55
    def around_generate(*args, &block)
      params = args.extract_options!                              # this is because we might get a call like forum_topics_path(forum, topic, :locale => :en)

      locale = params.delete(:locale)                             # extract the passed :locale option
      locale = I18n.locale if locale.nil?                         # default to I18n.locale when locale is nil (could also be false)
      locale = nil unless valid_locale?(locale)                   # reset to no locale when locale is not valid

      args << params

      yield.tap do |result|
        prepend_segment!(result, locale) if prepend_locale?(locale)
      end