code: def forward(self, x):
      return (self.mod(x) ** 2).sum()
  
file_path: pytorch/functorch/examples/compilation/linear_train.py
imports: import time
  import torch
  import torch.nn
  from functorch import make_functional
  from functorch.compile import nnc_jit
label_desc: Use image node_id 2 for calling the Foo obj's underlying member method code with example usage: obj.forward(x) and returns: unknown