code: def forward(self, z):
      out = self.fc1(z)
      out = self.relu(out)
      out = self.fc2(out)
      return out
  
imports: import os
  import argparse
  import logging
  import time
  import numpy
  import numpy.random
  import matplotlib
  import matplotlib.pyplot
  import torch
  import torch.nn
  import torch.optim
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the Decoder obj's underlying member method code with example usage: obj.forward(z) and returns: out