code: def _make_subelement(parent, tag, attrib=None):
      tag = "{" + parent.nsmap.get(parent.prefix, "") + "}" + tag
      return etree.SubElement(
          parent, tag, attrib=attrib, nsmap=parent.nsmap
      )
  
imports: import os
  from copy import deepcopy
  from dataclasses import dataclass, field
  from random import shuffle
  import math
  import numpy
  from paiargparse import pai_dataclass, pai_meta
  from tfaip.data.pipeline.definitions import PipelineMode, INPUT_PROCESSOR, TARGETS_PROCESSOR
  from tqdm import tqdm
  from lxml import etree
  import cv2
  from typing import List, Generator, Optional, Iterable, Dict, Any, Tuple
  from enum import IntEnum
  from calamari_ocr.ocr.dataset.datareader.base import CalamariDataGenerator, CalamariDataGeneratorParams, InputSample, SampleMeta
  from calamari_ocr.utils import split_all_ext, filename, glob_all
  from calamari_ocr.ocr.predict.params import Prediction
  import logging
label_desc: Use image node_id 10 for calling the PageXMLReader obj's underlying member method code with example usage: obj._make_subelement(parent, tag, attrib) and returns: etree