code: def test_get_label_map_coco(self):
      coco_dir = tasks_test_utils.get_test_data_path("coco_data")
      label_map = dataset_util.get_label_map_coco(coco_dir)
      all_keys = sorted(label_map.keys())
      self.assertEqual(all_keys[0], 0)
      self.assertEqual(all_keys[-1], 11)
      self.assertLen(all_keys, 12)
  
imports: import hashlib
  import json
  import os
  import shutil
  from unittest import mock
  import tensorflow
  from mediapipe.model_maker.python.vision.core import test_utils
  from mediapipe.model_maker.python.vision.object_detector import dataset_util
  from mediapipe.tasks.python.test import test_utils
label_desc: Use image node_id 11 for calling the DatasetUtilTest obj's underlying member method code with example usage: obj.test_get_label_map_coco() without return types