"application/rss+xml", 'content' => << http://localhost:8000/ Example description Sat, 27 May 2017 11:00:00 GMT http://example.com/1 Sat, 27 May 2017 21:12:00 GMT http://example.com/2 Sat, 27 May 2017 21:20:00 GMT http://example.com/3 Sat, 27 May 2017 22:10:00 GMT http://example.com/4 MESSAGE_BODY ];