code: def setter(self):
      from skorch.setter import optimizer_setter
  
      return optimizer_setter
  
file_path: skorch/skorch/tests/test_setter.py
imports: from unittest.mock import Mock
  import pytest
label_desc: Use image node_id 4 for calling the TestOptimizerSetter obj's underlying member method code with example usage: obj.setter() and returns: optimizer_setter