"application/rss+xml", 'content' => << http://localhost:8000/ Example description Mon, 22 May 2017 07:00:00 GMT http://example.com/1 Wed, 24 May 2017 12:00:00 GMT http://example.com/2 Fri, 26 May 2017 16:00:00 GMT http://example.com/3 Sat, 27 May 2017 21:12:00 GMT http://example.com/4 MESSAGE_BODY ];