code: def run_dataset_viewer(self, add_args):
      from calamari_ocr.scripts.dataset_viewer import main
  
      main(add_args + ["--no_plot"])
  
imports: import os
  import unittest
label_desc: Use image node_id 1 for calling the TestPageXML obj's underlying member method code with example usage: obj.run_dataset_viewer(add_args) without return types