code: def update(self):
          
          response = self.jss.session.post(self.url, data=self.auth)
          response_xml = ElementTree.fromstring(response.text.encode("utf_8"))
  
          # Remove previous data, if any, and then add in response's XML.
          self.clear()
          for child in response_xml.getchildren():
              self.append(child)
docs: Request an updated set of data from casper.jxml.