code: def forward(self, input):
      output = self.fc(input)
      return output
  
imports: import argparse
  import functools
  import random
  import unittest
  from multiprocessing import Manager
  import torch
  import torch.nn
  from omegaconf import OmegaConf
  from fairseq import optim
  from fairseq.distributed import utils
label_desc: Use image node_id 2 for calling the Model obj's underlying member method code with example usage: obj.forward(input) and returns: output