code: def _set_attributes(self):
          
          # turn config dict into nested objects
          config = obj(self._config_dict)
          # set the attributes onto instance
          for k, v in self._config_dict.items():
              setattr(self, k, getattr(config, k))
docs: Recursively transforms config dictionaries into instance attrs to make
          for easy dot attribute access instead of dictionary access.