code: def set_label(self, label, lang='en'):
          
          if self.fast_run and not self.require_write:
              self.require_write = self.fast_run_container.check_language_data(qid=self.wd_item_id,
                                                                               lang_data=[label], lang=lang,
                                                                               lang_data_type='label')
              if self.require_write:
                  self.init_data_load()
              else:
                  return
  
          if 'labels' not in self.wd_json_representation:
              self.wd_json_representation['labels'] = {}
          self.wd_json_representation['labels'][lang] = {
              'language': lang,
              'value': label
          }
docs: Set the label for a WD item in a certain language
          :param label: The description of the item in a certain language
          :type label: str
          :param lang: The language a label should be set for.
          :type lang: str
          :return: None