code: def tearDown(self):
      torch._C._jit_set_symbolic_shapes_test_mode(
          self.prev_symbolic_shapes_test_enabled
      )
  
imports: import operator
  import unittest
  from textwrap import dedent
  import torch
  from torch import nn, Tensor
  from torch.testing import FileCheck
  from torch.testing._internal.common_methods_invocations import sample_inputs_cat_concat
  from torch.testing._internal.common_utils import make_tensor
  from torch.testing._internal.jit_utils import JitTestCase, execWrapper
  from typing import List, Any
label_desc: Use image node_id 2 for calling the TestSymbolicShapeAnalysis obj's underlying member method code with example usage: obj.tearDown() without return types