class_docstr: Modified Alighed Xception
code: def forward(self, x):
      # Entry flow
      x = self.conv1(x)
      x = self.bn1(x)
      x = self.relu(x)
      # print('conv1 ',x.size())
      x = self.conv2(x)
      x = self.bn2(x)
      x = self.relu(x)
  
      x = self.block1(x)
      # print('block1',x.size())
      # low_level_feat = x
      x, low_level_feat = self.block2(x)
      # print('block2',x.size())
      x = self.block3(x)
      # print('xception block3 ',x.size())
  
      # Middle flow
      x = self.block4(x)
      x = self.block5(x)
      x = self.block6(x)
      x = self.block7(x)
      x = self.block8(x)
      x = self.block9(x)
      x = self.block10(x)
      x = self.block11(x)
      x = self.block12(x)
      x = self.block13(x)
      x = self.block14(x)
      x = self.block15(x)
      x = self.block16(x)
      x = self.block17(x)
      x = self.block18(x)
      x = self.block19(x)
  
      # Exit flow
      x = self.block20(x)
      x = self.conv3(x)
      # x = self.bn3(x)
      x = self.relu(x)
  
      x = self.conv4(x)
      # x = self.bn4(x)
      x = self.relu(x)
  
      x = self.conv5(x)
      # x = self.bn5(x)
      x = self.relu(x)
  
      return x, low_level_feat
  
imports: import math
  import torch
  import torch.nn
  import torch.nn.functional
  from collections import OrderedDict
  import torch.utils.model_zoo
  from torch.nn.parameter import Parameter
label_desc: Use image node_id 2 for calling the Xception obj's underlying member method code with example usage: obj.forward(x) and returns: x,  low_level_feat