code: def forward(self, x):
      out = self.fc1(x)
      out = self.fc2(out)
      return out
  
imports: import numpy
  import paddle
  import paddle.nn
  import parl
  import unittest
  from copy import deepcopy
  from parl.core.paddle.model import Model
label_desc: Use image node_id 2 for calling the Critic obj's underlying member method code with example usage: obj.forward(x) and returns: out