In this example we will read an rss feed with Groovy's XmlSlurper. RSS or Really Simple Syndication is standard format used by website authors to share updated information such as blog entries, exercises, examples or tutorials. Most often consumers sign up for a service such as an RSS reader where you can register one to many feeds. Google reader used to be the powerhouse until it closed which made room for Feedly and Inoreader.
Pointing to level up lunches rss feed for groovy examples will loop through each item and print out the title, published date and url.