code: def __init__(self):
      super(CriticWithBN, self).__init__()
      self.fc1 = nn.Linear(4, 300)
      self.bn = nn.BatchNorm1d(300)
      self.fc2 = nn.Linear(300, 1)
  
imports: import numpy
  import unittest
  import os
  import torch
  import torch.nn
  import torch.optim
  import parl
label_desc: Use image node_id 1 to create a new CriticWithBN object from inherited base classes: parl with example: obj = CriticWithBN()