@Override
  public List<Namespace> listNamespaces(Namespace nmspc) throws NoSuchNamespaceException {
    return nsCatalog.listNamespaces(nmspc);
  }
Class that wraps an Iceberg Catalog to cache tables.
@param <CATALOG> the catalog class
standalone-metastore/metastore-rest-catalog/src/main/java/org/apache/iceberg/rest/HMSCachingCatalog.java