@Override
    public DynamicTableSource copy() {
        return new TubeMQTableSource(
                physicalDataType, valueDecodingFormat, masterAddress,
                topic, streamIdSet, consumerGroup, sessionKey, configuration,
                watermarkStrategy, proctimeAttribute, ignoreErrors, innerFormat,
                inlongMetric, auditHostAndPorts, auditKeys, dirtySink, dirtyOptions);
    }
Watermark strategy that is used to generate per-partition watermark.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/tubemq/src/main/java/org/apache/inlong/sort/tubemq/table/TubeMQTableSource.java