code: def test_roberta_default_no_change(self):
      model = SequenceLabeler(collapse_whitespace=True)
      assert model.config.collapse_whitespace == True
      model.fit(["test"], [[]])
      model.save("./test_model.jl")
      model = SequenceLabeler.load("./test_model.jl")
      assert model.config.collapse_whitespace == True
  
file_path: finetune/tests/test_backwards_compat.py
imports: import unittest
  from pathlib import Path
  import os
  import pytest
  import tqdl
  from finetune import SequenceLabeler
label_desc: Use image node_id 2 for calling the TestConfig obj's underlying member method code with example usage: obj.test_roberta_default_no_change() without return types