code: def forward(self, x):
      x = self.linear_1(x)
      x = self.linear_2(x)
      return x
  
file_path: ColossalAI/tests/test_tensor/test_dtensor/test_dtensor.py
imports: import torch
  from colossalai.device.device_mesh import DeviceMesh
  from colossalai.initialize import launch
  from colossalai.logging import disable_existing_loggers
  from colossalai.tensor.d_tensor import ShardingSpec, distribute_tensor, get_global_shape, redistribute, to_global
  from colossalai.testing import rerun_if_address_is_in_use, spawn
label_desc: Use image node_id 2 for calling the TestModel obj's underlying member method code with example usage: obj.forward(x) and returns: x