code: def tearDown(self):
      # Clear registered items
      box_types.clear()
      box_converters.clear()
      _box_type_to_name.clear()
      # Restore original items
      box_types.update(self.box_types)
      box_converters.update(self.box_converters)
      _box_type_to_name.update(self._box_type_to_name)
  
file_path: mmdetection/tests/test_structures/test_bbox/test_box_type.py
imports: from unittest import TestCase
  from unittest.mock import MagicMock
  import torch
  from mmdet.structures.bbox.box_type import _box_type_to_name, box_converters, box_types, convert_box_type, get_box_type, register_box, register_box_converter
  from .utils import ToyBaseBoxes
label_desc: Use image node_id 2 for calling the TestBoxType obj's underlying member method code with example usage: obj.tearDown() without return types