private static Namespace appendLevel(Namespace baseNamespace, String newLevel) {
        String[] namespace = new String[baseNamespace.levels().length + 1];
        System.arraycopy(baseNamespace.levels(), 0, namespace, 0, baseNamespace.levels().length);
        namespace[baseNamespace.levels().length] = newLevel;
        return Namespace.of(namespace);
    }
Append a new level to the base namespace
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/FlinkCatalog.java