code: def forward(self, x):
      return self.layers(x)
  
file_path: pytorch/test/distributed/fsdp/test_fsdp_multiple_wrapping.py
imports: import sys
  import torch
  from torch import distributed
  from torch.distributed.fsdp import FullyShardedDataParallel
  from torch.nn import Linear, Module, Sequential
  from torch.optim import SGD
  from torch.testing._internal.common_distributed import skip_if_lt_x_gpu
  from torch.testing._internal.common_fsdp import FSDPTest
  from torch.testing._internal.common_utils import run_tests, TEST_WITH_DEV_DBG_ASAN
label_desc: Use image node_id 2 for calling the InnerModel obj's underlying member method code with example usage: obj.forward(x) and returns: self