code: def test_01_01_default_directory_none(self):
      print(
          (cellprofiler_core.preferences.get_default_image_directory())
      )
      assert True
  
file_path: CellProfiler/tests/core/preferences/test_preferences.py
imports: import tempfile
  import unittest
  import cellprofiler_core.preferences
label_desc: Use image node_id 3 for calling the TestPreferences_02 obj's underlying member method code with example usage: obj.test_01_01_default_directory_none() without return types