code: def make_client(instance):
      
      neutron_client = utils.get_client_class(
          API_NAME,
          instance._api_version[API_NAME],
          API_VERSIONS,
      )
      instance.initialize()
      url = instance._url
      url = url.rstrip("/")
      client = neutron_client(username=instance._username,
                              project_name=instance._project_name,
                              password=instance._password,
                              region_name=instance._region_name,
                              auth_url=instance._auth_url,
                              endpoint_url=url,
                              endpoint_type=instance._endpoint_type,
                              token=instance._token,
                              auth_strategy=instance._auth_strategy,
                              insecure=instance._insecure,
                              ca_cert=instance._ca_cert,
                              retries=instance._retries,
                              raise_errors=instance._raise_errors,
                              session=instance._session,
                              auth=instance._auth)
      return client
docs: Returns an neutron client.