code: def test_nested_list(self):
      def foo(z):
          # type: (Tuple[int, List[List[int]]]) -> int
          x, y = z
          return y[0][1]
  
      self.checkScript(foo, ((1, [[1, 2], [3, 4]]),))
  
imports: import os
  import sys
  import torch
  from torch.testing._internal.jit_utils import JitTestCase, make_global
  from torch.testing._internal.common_utils import IS_WINDOWS
  from collections import namedtuple
  from typing import List, Tuple, Dict, NamedTuple
label_desc: Use image node_id 12 for calling the TestTyping obj's underlying member method code with example usage: obj.test_nested_list() and returns: y