code: def test_dataset_viewer_hdf5(self):
      files = os.path.join(
          this_dir, "data", "uw3_50lines", "uw3-50lines.h5"
      )
      self.run_dataset_viewer(["--gen", "Hdf5", "--gen.files", files])
  
file_path: calamari/calamari_ocr/test/test_scripts.py
imports: import os
  import unittest
label_desc: Use image node_id 5 for calling the TestDatasetViewer obj's underlying member method code with example usage: obj.test_dataset_viewer_hdf5() without return types