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