code: def test_jpeg_cmyk_to_rgb(self):
      image = self._get_image("6pixels_cmyk.jpeg")
      new_image = image_utils.jpeg_cmyk_to_rgb(image, quality=100)
      self.assertIsInstance(new_image, bytes)
      self.assertNotEqual(image, new_image)
      # Converting between color systems is not bijective, so high rtol.
      original_np_image = image_utils.decode_image(image)
      new_np_image = image_utils.decode_image(new_image)
      np.testing.assert_allclose(
          original_np_image, new_np_image, rtol=10
      )
  
file_path: datasets/tensorflow_datasets/core/utils/image_utils_test.py
imports: import os
  import numpy
  import tensorflow
  from tensorflow_datasets import testing
  from tensorflow_datasets.core.utils import image_utils
label_desc: Use image node_id 5 for calling the ImageUtilsTest obj's underlying member method code with example usage: obj.test_jpeg_cmyk_to_rgb() without return types