    # File lib/action_controller/caching.rb, line 116
          def expire_page(options = {})
            return unless perform_caching
            if options[:action].is_a?(Array)
              options[:action].dup.each do |action|
                self.class.expire_page(url_for(options.merge({ :only_path => true, :skip_relative_url_root => true, :action => action })))
              end
            else
              self.class.expire_page(url_for(options.merge({ :only_path => true, :skip_relative_url_root => true })))
            end
          end