code: def languages(self):
          
          result = set()
          languages = self._safe_get_element('ItemAttributes.Languages')
          if languages is not None:
              for language in languages.iterchildren():
                  text = self._safe_get_element_text('Name', language)
                  if text:
                      result.add(text.lower())
          return result
docs: Languages.
  
          Returns a set of languages in lower-case.
  
          :return:
              Returns a set of languages in lower-case (strings).