code: def test_pickle(self):
      class ComplexModule(torch.jit.ScriptModule):
          def __init__(self):
              super().__init__()
              self.a = 3 + 5j
              self.b = [2 + 3j, 3 + 4j, 0 - 3j, -4 + 0j]
              self.c = {2 + 3j: 2 - 3j, -4.3 - 2j: 3j}
  
          @torch.jit.script_method
          def forward(self, b: int):
              return b + 2j
  
      loaded = self.getExportImportCopy(ComplexModule())
      self.assertEqual(loaded.a, 3 + 5j)
      self.assertEqual(loaded.b, [2 + 3j, 3 + 4j, -3j, -4])
      self.assertEqual(loaded.c, {2 + 3j: 2 - 3j, -4.3 - 2j: 3j})
      self.assertEqual(loaded(2), 2 + 2j)
  
imports: import torch
  import os
  import sys
  from torch.testing._internal.jit_utils import JitTestCase, execWrapper
  from torch.testing._internal.common_utils import IS_MACOS
  from typing import List, Dict
  from itertools import product
  from textwrap import dedent
  import cmath
label_desc: Use image node_id 4 for calling the TestComplex obj's underlying member method code with example usage: obj.test_pickle() and returns: unknown