in src/main/java/com/aliyun/openservices/aliyun/log/producer/LogProducer.java [207:216]
public ListenableFuture<Result> send(
String project,
String logStore,
String topic,
String source,
String shardHash,
LogItem logItem)
throws InterruptedException, ProducerException {
return send(project, logStore, topic, source, shardHash, logItem, null);
}