code: def parse_xml(self, xml):
          '''
              :param xml: lxml.etree.Element representing a single VocabularyItem
          '''
          xmlutils = XmlUtils(xml)
          self.code_value = xmlutils.get_string_by_xpath('code-value')
          self.display_text = xmlutils.get_string_by_xpath('display-text')
          self.abbreviation_text = xmlutils.get_string_by_xpath('abbreviation-text')
          info_xml = xml.xpath('info-xml')
          if info_xml != []:
              self.info_xml = info_xml[0f parse_xml(self, xml):
          '''
              :param xml: lxml.etree.Element representing a single VocabularyItem
          '''
          xmlutils = XmlUtils(xml)
          self.code_value = xmlutils.get_string_by_xpath('code-value')
          self.display_text = xmlutils.get_string_by_xpath('display-text')
          self.abbreviation_text = xmlutils.get_string_by_xpath('abbreviation-text')
          info_xml = xml.xpath('info-xml')
          if info_xml != []:
              self.info_xml = info_xml[0]
docs: :param xml: lxml.etree.Element representing a single VocabularyItem