@Override
    public Set<ConfigOption<?>> optionalOptions() {
        Set<ConfigOption<?>> options = new HashSet<>();
        options.add(PORT);
        options.add(SERVER_TIME_ZONE);
        options.add(SCAN_STARTUP_MODE);
        options.add(INLONG_METRIC);
        options.add(INLONG_AUDIT);
        options.add(AUDIT_KEYS);

        return options;
    }
Factory for creating configured instance of {@link com.ververica.cdc.connectors.sqlserver.SqlServerSource}.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/sqlserver-cdc/src/main/java/org/apache/inlong/sort/sqlserver/SqlserverTableFactory.java