Create a BatchHttpRequest object based on the discovery document.
new_batch_http_request()
Create a BatchHttpRequest object based on the discovery document. Args: callback: callable, A callback to be called for each response, of the form callback(id, response, exception). The first parameter is the request id, and the second is the deserialized response object. The third is an apiclient.errors.HttpError exception object if an HTTP error occurred while processing the request, or None if no error occurred. Returns: A BatchHttpRequest object based on the discovery document.