code: def get_languages(self, target_language=None):
          
          query_params = {}
          if target_language is None:
              target_language = self.target_language
          if target_language is not None:
              query_params["target"] = target_language
          response = self._connection.api_request(
              method="GET", path="/languages", query_params=query_params
          )
          return response.get("data", {}).get("languages", ())
docs: Get list of supported languages for translation.
  
          Response
  
          See
          https://cloud.google.com/translate/docs/discovering-supported-languages
  
          :type target_language: str
          :param target_language: (Optional) The language used to localize
                                  returned language names. Defaults to the
                                  target language on the current client.
  
          :rtype: list
          :returns: List of dictionaries. Each dictionary contains a supported
                    ISO 639-1 language code (using the dictionary key
                    ``language``). If ``target_language`` is passed, each
                    dictionary will also contain the name of each supported
                    language (localized to the target language).