message: Remove model.model in vis_utils plotting.
diff: @@ -77,7 +77,6 @@ def model_to_dot(model, show_shapes=False, show_layer_names=True, rankdir='TB'):
  if isinstance(model, Sequential):
  if not model.built:
  model.build()
  - model = model.model
  layers = model.layers
  # Create graph nodes.
  