submitBatch(contentLength, multipartContentType, body, options) {
        return this.client.sendOperationRequest({ contentLength, multipartContentType, body, options }, submitBatchOperationSpec$1);
    }
The Batch operation allows multiple API calls to be embedded into a single HTTP request.
@param contentLength The length of the request.
@param multipartContentType Required. The value of this header must be multipart/mixed with a batch
                            boundary. Example header value: multipart/mixed; boundary=batch_<GUID>
@param body Initial data
@param options The options parameters.