code: def test_fix(self):
      with self.assertLogs(level="INFO") as log_cm:
          if torch.cuda.is_available():
              self.original_model.to(torch.device("cuda:0"))
          ModuleValidator.fix(self.original_model)
          self.assertGreater(len(log_cm.records), 0)
          for log_record in log_cm.records:
              log_msg = log_record.getMessage()
              self.assertRegex(
                  log_msg,
                  "Replaced sub_module .+ with .*"
                  "|"
                  "The default batch_norm fixer replaces BatchNorm with GroupNorm.",
              )
  
imports: import unittest
  from collections import OrderedDict
  import torch
  import torch.nn
  from opacus.validators.errors import UnsupportedModuleError
  from opacus.validators.module_validator import ModuleValidator
  from torchvision.models import mobilenet_v3_small
label_desc: Use image node_id 8 for calling the ModuleValidator_test obj's underlying member method code with example usage: obj.test_fix() without return types