code: def _setup(self):
          
          default_settings.reload()
          environment_variable = self._kwargs.get(
              "ENVVAR_FOR_DYNACONF", default_settings.ENVVAR_FOR_DYNACONF
          )
          settings_module = os.environ.get(environment_variable)
          self._wrapped = Settings(
              settings_module=settings_module, **self._kwargs
          )
          self.logger.debug("Lazy Settings _setup ...")
docs: Initial setup, run once.