namespace (ActionController::Routing::RouteSet::Mapper)

    # File lib/action_controller/routing/route_set.rb, line 45
            def namespace(name, options = {}, &block)
              if options[:namespace]
                with_options({:path_prefix => "#{options.delete(:path_prefix)}/#{name}", :name_prefix => "#{options.delete(:name_prefix)}#{name}_", :namespace => "#{options.delete(:namespace)}#{name}/" }.merge(options), &block)
              else
                with_options({:path_prefix => name, :name_prefix => "#{name}_", :namespace => "#{name}/" }.merge(options), &block)
              end
            end