@Override
    public void dispose() throws Exception {
        if (tableLoader != null) {
            tableLoader.close();
        }
    }
Write all the complete data files to a newly created manifest file and return the manifest's avro serialized
bytes.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/sink/multiple/IcebergSingleFileCommiter.java