code: def tearDown(self):
      # Change dtype back to default (Otherwise, other unit tests will complain)
      torch.set_default_dtype(self.default_dtype)
  
file_path: pytorch/test/jit/test_backend_nnapi.py
imports: import os
  import sys
  import unittest
  import torch
  import torch._C
  from pathlib import Path
  from torch.testing._internal.common_utils import IS_FBCODE
label_desc: Use image node_id 5 for calling the TestNnapiBackend obj's underlying member method code with example usage: obj.tearDown() without return types