code: def replace(self, scaling_group, name, cooldown, min_entities,
              max_entities, metadata=None):
          
          body = self._create_group_config_body(name, cooldown, min_entities,
                  max_entities, metadata=metadata)
          group_id = utils.get_id(scaling_group)
          uri = "/%s/%s/config" % (self.uri_base, group_id)
          resp, resp_body = self.api.method_put(uri, body=body)
docs: Replace an existing ScalingGroup configuration. All of the attributes
          must be specified If you wish to delete any of the optional attributes,
          pass them in as None.