new

# File actionpack/lib/action_controller/caching/actions.rb, line 119
        def initialize(controller, options = {})
          @extension = extract_extension(controller.request.path)
          path = controller.url_for(options).split('://').last
          normalize!(path)
          add_extension!(path, @extension)
          @path = URI.unescape(path)
        end