# File lib/action_controller/caching.rb, line 188
      def expire_action(options = {})
        return unless perform_caching
        if options[:action].is_a?(Array)
          options[:action].dup.each do |action|
            expire_fragment(ActionCachePath.path_for(self, options.merge({ :action => action })))
          end
        else
          expire_fragment(ActionCachePath.path_for(self, options))
        end
      end