code: def check_mutable_attributes_exist(model):
      for attr in model._mutable_attributes:
          assert hasattr(model, attr)
  
imports: from __future__ import annotations
  import copy
  import inspect
  import pickle
  import random
  from .utils import assert_predictions_are_close, seed_params
label_desc: Use image node_id 19 for calling a global function with example usage: check_mutable_attributes_exist(model) without return types