@Override
    public Boolean isSinkMultiple(StreamNode nodeInfo) {
        IcebergSink icebergSink = (IcebergSink) nodeInfo;
        return icebergSink.getSinkMultipleEnable();
    }
The Provider for creating Iceberg load nodes.
inlong-manager/manager-pojo/src/main/java/org/apache/inlong/manager/pojo/sort/node/provider/IcebergProvider.java