code: def test_modify_fqn(self):
      class ModelWrapper(nn.Module):
          def __init__(self, module):
              super().__init__()
              self.module = module
  
          def forward(self, x):
              return self.module(x)
  
      @contract()
      def wrap_module(module: nn.Module) -> nn.Module:
          return ModelWrapper(module)
  
      model = ToyModel()
  
      with self.assertRaisesRegex(
          RuntimeError,
          "Check parameters, Composable distributed API implementations cannot modify FQNs",
      ):
          wrap_module(model.seq1)
  
file_path: pytorch/test/distributed/_composable/test_contract.py
imports: from copy import deepcopy
  from typing import Tuple
  import torch
  import torch.nn
  from torch.distributed._composable import _get_registry, contract
  from torch.testing._internal.common_utils import run_tests, skipIfTorchDynamo, TestCase
label_desc: Use image node_id 2 for calling the TestContract obj's underlying member method code with example usage: obj.test_modify_fqn() and returns: ModelWrapper, self