code: public XMLElement parse(String ref) throws SlickException {
  		return parse(ref, ResourceLoader.getResourceAsStream(ref));
  	}
docs: Parse the XML document located by the slick resource loader using the
  reference given.
  
  @param ref The reference to the XML document
  @return The root element of the newly parse document
  @throws SlickException Indicates a failure to parse the XML, most likely the
  XML is malformed in some way.