code: def auth_get_token(self, check_state=True):
  		'Refresh or acquire access_token.'
  		res = self.auth_access_data_raw = yield self._auth_token_request()
  		defer.returnValue(self._auth_token_process(res, check_state=check_state)f auth_get_token(self, check_state=True):
  		'Refresh or acquire access_token.'
  		res = self.auth_access_data_raw = yield self._auth_token_request()
  		defer.returnValue(self._auth_token_process(res, check_state=check_state))
docs: Refresh or acquire access_token.