Read-in XML tags in an array format accessible via "paths". Modify existing XML. Create a proper XML string. All methods are used to programmatically read, modify, and/or create XML.
If you like to use the Twick.it API you should take a look at this wrappers. By simply calling some static methods you can read data from the API and don't have to care about all the REST stuff like sending HTTP request or parsing XML data.