code: def test_generic_list(self):
      self.assertEqual(torch.ops._test.get_first([["hello"]]), "hello")
  
imports: import os
  import sys
  import unittest
  import torch
  from torch.testing._internal.jit_utils import JitTestCase
label_desc: Use image node_id 14 for calling the TestCustomOperators obj's underlying member method code with example usage: obj.test_generic_list() without return types