@Override
    public ChangelogMode getChangelogMode() {
        if (this.sourceMultipleEnable || !changelogNormalizeEnabled) {
            return ChangelogMode.all();
        } else {
            return ChangelogMode.newBuilder()
                    .addContainedKind(RowKind.INSERT)
                    .addContainedKind(RowKind.UPDATE_AFTER)
                    .addContainedKind(RowKind.DELETE)
                    .build();
        }
    }
Metadata that is appended at the end of a physical source row.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mongodb-cdc/src/main/java/org/apache/inlong/sort/cdc/mongodb/table/MongoDBTableSource.java