code: def test_modules_to_freeze():
      model = QuestionAnsweringTask(backbone=TEST_BACKBONE)
      assert model.modules_to_freeze() is model.model.distilbert
  
file_path: lightning-flash/tests/text/question_answering/test_model.py
imports: import collections
  from typing import Any
  import pytest
  import torch
  from flash.core.utilities.imports import _TOPIC_TEXT_AVAILABLE
  from flash.text import QuestionAnsweringTask
  from torch import Tensor
  from tests.helpers.task_tester import TaskTester
label_desc: Use image node_id 1 for calling a global function with example usage: test_modules_to_freeze() without return types