code: def test_torchbind_take_as_arg(self):
      global StackString  # see [local resolution in python]
      StackString = torch.classes._TorchScriptTesting._StackString
  
      def foo(stackstring):
          # type: (StackString)
          stackstring.push("lel")
          return stackstring
  
      script_input = torch.classes._TorchScriptTesting._StackString([])
      scripted = torch.jit.script(foo)
      script_output = scripted(script_input)
      self.assertEqual(script_output.pop(), "lel")
  
imports: import io
  import os
  import sys
  import copy
  import unittest
  import torch
  from typing import Optional
  from torch.testing._internal.jit_utils import JitTestCase
  from torch.testing._internal.common_utils import IS_FBCODE, IS_MACOS, IS_SANDCASTLE, IS_WINDOWS, find_library_location
  from torch.testing import FileCheck
label_desc: Use image node_id 3 for calling the TestTorchbind obj's underlying member method code with example usage: obj.test_torchbind_take_as_arg() and returns: stackstring