code: def configure_updatebatch(self, ns, definition):
          
          operation = Operation.UpdateBatch
  
          @self.add_route(ns.collection_path, operation, ns)
          @request(definition.request_schema)
          @response(definition.response_schema)
          @wraps(definition.func)
          def update_batch(**path_data):
              headers = dict()
              request_data = load_request_data(definition.request_schema)
              response_data = definition.func(**merge_data(path_data, request_data))
              definition.header_func(headers, response_data)
              response_format = self.negotiate_response_content(definition.response_formats)
              return dump_response_data(
                  definition.response_schema,
                  response_data,
                  status_code=operation.value.default_code,
                  headers=headers,
                  response_format=response_format,
              )
  
          update_batch.__doc__ = "Update a batch of {}".format(ns.subject_name)
docs: Register an update batch endpoint.
  
          The definition's func should be an update function, which must:
          - accept kwargs for the request and path data
          - return a new item
  
          :param ns: the namespace
          :param definition: the endpoint definition