code: def forward(self, x):
      out = self.linear(x)
      return out
  
imports: import torch.nn.functional
  import torch, os, io
  import base64
  import torch.nn
  import unittest
  import random
  from bigdl.nano.pytorch.patching import patch_encryption
  import torch.optim
label_desc: Use image node_id 2 for calling the linearModel obj's underlying member method code with example usage: obj.forward(x) and returns: out