docs: def save(self, data, xparent=None):
          """
          Parses the element from XML to Python.
          
          :param      data    | <variant>
                      xparent | <xml.etree.ElementTree.Element> || None
          
          :return     <xml.etree.ElementTree.Element>
          """
          if xparent is not None:
              elem = ElementTree.SubElement(xparent, 'list')
          else:
              elem = ElementTree.Element('list')
  
          for item in data:
              XmlDataIO.toXml(item, elem)
  
          return elem