code: def test_prediction_hdf5(self):
      run(
          predict_args(
              data=Hdf5(
                  files=[
                      os.path.join(
                          this_dir,
                          "data",
                          "uw3_50lines",
                          "uw3-50lines.h5",
                      )
                  ],
              )
          )
      )
  
imports: import os
  import unittest
  import numpy
  from calamari_ocr.ocr import SavedCalamariModel
  from calamari_ocr.ocr.predict.params import PredictionResult, Predictions
  from tensorflow import keras
  from calamari_ocr.ocr.dataset.datareader.abbyy.reader import Abbyy
  from calamari_ocr.ocr.dataset.datareader.base import CalamariDataGeneratorParams
  from calamari_ocr.ocr.dataset.datareader.extended_prediction import ExtendedPredictionDataParams
  from calamari_ocr.ocr.dataset.datareader.file import FileDataParams
  from calamari_ocr.ocr.dataset.datareader.hdf5.reader import Hdf5
  from calamari_ocr.ocr.dataset.datareader.pagexml.reader import PageXML
  from calamari_ocr.ocr.predict.predictor import Predictor, PredictorParams, MultiPredictor
  from calamari_ocr.scripts.compute_average_prediction_confidence import run
  from calamari_ocr.scripts.predict import run, PredictArgs
  from calamari_ocr.utils import glob_all
  from calamari_ocr.utils.image import ImageLoaderParams
label_desc: Use image node_id 8 for calling the TestPrediction obj's underlying member method code with example usage: obj.test_prediction_hdf5() without return types