code: def tearDown(self):
      torch.cuda.empty_cache()
  
file_path: pytorch-metric-learning/tests/testers/test_global_embedding_space_tester.py
imports: import unittest
  import torch
  from pytorch_metric_learning.testers import GlobalEmbeddingSpaceTester
  from pytorch_metric_learning.utils import accuracy_calculator
  from pytorch_metric_learning.utils import common_functions
  from ..zzz_testing_utils.testing_utils import angle_to_coord
label_desc: Use image node_id 4 for calling the TestGlobalEmbeddingSpaceTester obj's underlying member method code with example usage: obj.tearDown() without return types