code: def test_to_normalized_batch(self):
      batch = ia.Batch(images=np.zeros((1, 2, 2, 3), dtype=np.uint8))
  
      batch_norm = batch.to_normalized_batch()
  
      assert batch_norm is batch
  
imports: from __future__ import print_function, division, absolute_import
  import warnings
  import sys
  import numpy
  import imgaug
  import imgaug.augmenters
  from imgaug.testutils import reseed
  from imgaug.augmentables.batches import _BatchInAugmentation
label_desc: Use image node_id 7 for calling the TestBatch obj's underlying member method code with example usage: obj.test_to_normalized_batch() without return types