code: public BatchWriteItemResponse batchWriteItem(BatchWriteItemRequest request)
              throws BceClientException, BceServiceException {
          checkNotNull(request, "request should not be null.");
          InternalRequest httpRequest = createRequestUnderInstance(HttpMethodName.POST,
                  MolaDbConstants.URI_TABLE);
          httpRequest.addParameter(MolaDbConstants.URI_BATCH_WRITE, null);
          fillInHeadAndBody(request, httpRequest);
          BatchWriteItemResponse ret = this.invokeHttpClient(httpRequest, BatchWriteItemResponse.class);
          return ret;
      }
docs: <p>
  The <i>BatchWriteItem</i> operation write items with to Moladb.
  </p>
  <p>
  The <i>BatchGetItem</i> can write items within multi tables.
  These tables MUST under same instance.
  </p>
  
  @param request Container for the necessary parameters to execute the
  BatchWriteItem request.
  
  @return The responseContent from the BatchWriteItem service method, as returned by
  Moladb.
  
  @throws BceClientException
  If any internal errors are encountered inside the client while
  attempting to make the request or handle the responseContent.  For example
  if a network connection is not available.
  @throws BceServiceException
  If an error responseContent is returned by Moladb indicating
  either a problem with the data in the request, or a server side issue.