rack_app

# File actionpack/lib/action_dispatch/routing/inspector.rb, line 15
      def rack_app(app = self.app)
        @rack_app ||= begin
          class_name = app.class.name.to_s
          if class_name == "ActionDispatch::Routing::Mapper::Constraints"
            rack_app(app.app)
          elsif ActionDispatch::Routing::Redirect === app || class_name !~ /^ActionDispatch::Routing/
            app
          end
        end
      end