class_docstr: First four layers from Vgg16.
class_docstr_tok: ["First","four","layers","from","Vgg16","."]
code: def forward(self, X):
      h = F.relu(self.conv1_1(X))
      h = F.relu(self.conv1_2(h))
      relu1_2 = h
      h = F.max_pool2d(h, kernel_size=2, stride=2)
  
      h = F.relu(self.conv2_1(h))
      h = F.relu(self.conv2_2(h))
      relu2_2 = h
      h = F.max_pool2d(h, kernel_size=2, stride=2)
  
      h = F.relu(self.conv3_1(h))
      h = F.relu(self.conv3_2(h))
      h = F.relu(self.conv3_3(h))
      relu3_3 = h
      h = F.max_pool2d(h, kernel_size=2, stride=2)
  
      h = F.relu(self.conv4_1(h))
      h = F.relu(self.conv4_2(h))
      h = F.relu(self.conv4_3(h))
      relu4_3 = h
  
      return [relu1_2, relu2_2, relu3_3, relu4_3]
  
imports: import os
  import argparse
  import paddle
  import paddle.nn
  import numpy
  import paddle.nn.functional
  from paddlehub.env import MODULE_HOME
  from paddlehub.module.module import moduleinfo
  from paddlehub.vision.transforms import Compose, Resize, CenterCrop
  from paddlehub.module.cv_module import StyleTransferModule
label_desc: Use image node_id 2 for calling the Vgg16 obj's underlying member method code with example usage: obj.forward(X) and returns: list