filter_routes

# File actionpack/lib/action_dispatch/routing/inspector.rb, line 91
      def filter_routes(filter)
        if filter
          @routes.select do |route|
            route_wrapper = RouteWrapper.new(route)
            filter.any? { |default, value| route_wrapper.send(default) =~ value }
          end
        else
          @routes
        end
      end