@Override
                public Object read(SourceRecord record,
                        @Nullable TableChanges.TableChange tableSchema, RowData rowData) {
                    // construct debezium json
                    return getDebeziumData(record, tableSchema, rowData);
                }
Defines the supported metadata columns for {@link MongoDBTableSource}.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mongodb-cdc/src/main/java/org/apache/inlong/sort/cdc/mongodb/table/MongoDBReadableMetadata.java