code: def init_language_data(self, lang, lang_data_type):
          
          if lang not in self.loaded_langs:
              self.loaded_langs[lang] = {}
  
          if lang_data_type not in self.loaded_langs[lang]:
              result = self._query_lang(lang=lang, lang_data_type=lang_data_type)
              data = self._process_lang(result)
              self.loaded_langs[lang].update({lang_data_type: data})
docs: Initialize language data store
          :param lang: language code
          :param lang_data_type: 'label', 'description' or 'aliases'
          :return: None