code: def check_language_data(self, qid, lang_data, lang, lang_data_type):
          
          all_lang_strings = set(x.strip().lower() for x in self.get_language_data(qid, lang, lang_data_type))
  
          for s in lang_data:
              if s.strip().lower() not in all_lang_strings:
                  print('fastrun failed at label: {}, string: {}'.format(lang_data_type, s))
                  return True
  
          return False
docs: Method to check if certain language data exists as a label, description or aliases
          :param lang_data: list of string values to check
          :type lang_data: list
          :param lang: language code
          :type lang: str
          :param lang_data_type: What kind of data is it? 'label', 'description' or 'aliases'?
          :return: