@Override
    public Integer getKey(RowData row) {
        RowDataWrapper wrappedRowData = lazyRowDataWrapper().wrap(row);
        StructProjection projectedRowData = lazyStructProjection().wrap(wrappedRowData);
        StructLikeWrapper wrapper = lazyStructLikeWrapper().set(projectedRowData);
        return wrapper.hashCode();
    }
Construct the {@link StructLikeWrapper} lazily because it is not serializable.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/sink/EqualityFieldKeySelector.java