code: def _construct_url(self, base_api, params):
          
          params['key'] = self.api_key
          return super(PickPoint, self)._construct_url(base_api, params)
docs: Construct geocoding request url. Overridden.
  
          :param str base_api: Geocoding function base address - self.api
              or self.reverse_api.
  
          :param dict params: Geocoding params.
  
          :return: string URL.