@Override
    public TableId getTableId(SourceRecord record) {
        return null;
    }
The context for fetch task that fetching data of snapshot split from JDBC data source.
Copy from com.ververica:flink-cdc-base:2.3.0.
inlong-sort/sort-flink/cdc-base/src/main/java/org/apache/inlong/sort/cdc/base/source/reader/external/JdbcSourceFetchTaskContext.java