root (ActionController::Routing::RouteSet::Mapper)

    # File lib/action_controller/routing/route_set.rb, line 21
            def root(options = {})
              if options.is_a?(Symbol)
                if source_route = @set.named_routes.routes[options]
                  options = source_route.defaults.merge({ :conditions => source_route.conditions })
                end
              end
              named_route("root", '', options)
            end