@Override
    public boolean partitionExists(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws CatalogException {
        throw new UnsupportedOperationException();
    }
A Flink Catalog implementation that wraps an Iceberg {@link Catalog}.
<p>
The mapping between Flink database and Iceberg namespace:
Supplying a base namespace for a given catalog, so if you have a catalog that supports a 2-level namespace, you
would supply the first level in the catalog configuration and the second level would be exposed as Flink databases.
</p>
The Iceberg table manages its partitions by itself. The partition of the Iceberg table is independent of the
partition of Flink.

Copy from iceberg-flink:iceberg-flink-1.13:0.13.2
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/FlinkCatalog.java