@Override
  public String getDisplayString(String[] children) {
    return getStandardDisplayString("iceberg_bucket", children);
  }
GenericUDFIcebergBucket - UDF that wraps around Iceberg's bucket transform function
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/udf/GenericUDFIcebergBucket.java