message: Correct parameter syntax for vis_utils.plot_model
diff: @@ -92,7 +92,7 @@ class ModelToDotFormatTest(test.TestCase):
  try:
  vis_utils.plot_model(
  model, to_file=dot_img_file, show_shapes=True,
  - show_dtype=True expand_nested=True)
  + show_dtype=True, expand_nested=True)
  self.assertTrue(file_io.file_exists(dot_img_file))
  file_io.delete_file(dot_img_file)
  except ImportError:
  