code: def tearDown(self):
      cellprofiler_core.preferences.__dict__[
          "__is_headless"
      ] = self.old_headless
      cellprofiler_core.preferences.__dict__[
          "__headless_config"
      ] = self.old_headless_config
  
file_path: CellProfiler/tests/core/preferences/test_preferences.py
imports: import tempfile
  import unittest
  import cellprofiler_core.preferences
label_desc: Use image node_id 2 for calling the TestPreferences_02 obj's underlying member method code with example usage: obj.tearDown() without return types