code: def _sample_iterator(self):
      return zip(self.params.images, self.params.xml_files)
  
imports: import logging
  from copy import deepcopy
  from dataclasses import dataclass, field
  from typing import List, Generator
  import numpy
  from paiargparse import pai_dataclass, pai_meta
  from tfaip.data.pipeline.definitions import PipelineMode, TARGETS_PROCESSOR, INPUT_PROCESSOR
  from tqdm import tqdm
  from calamari_ocr.ocr.dataset.datareader.abbyy.xml import XMLReader, XMLWriter
  from calamari_ocr.ocr.dataset.datareader.base import CalamariDataGenerator, CalamariDataGeneratorParams, InputSample, SampleMeta
  from calamari_ocr.utils import split_all_ext, glob_all
label_desc: Use image node_id 4 for calling the AbbyyGenerator obj's underlying member method code with example usage: obj._sample_iterator() and returns: zip