code: def update_xml_element(self):
          
  
          if not hasattr(self, 'xml_element'):
              self.xml_element = etree.Element(self.name, nsmap=NSMAP)
  
          for element in self.xml_element:
              self.xml_element.remove(element)
  
          self.xml_element.tail = ''
          self.xml_element.text = self.convert_html_to_xml()
  
          return self.xml_element
docs: Updates the xml element contents to matches the instance contents.
  
          :returns: Updated XML element.
          :rtype: lxml.etree._Element