code: def test_special_case(self):
      print("-" * 20, "test_special_case", "-" * 20)
  
      class my_model(Model):
          def __init__(self):
              super(my_model, self).__init__()
              self.dense = Dense(64, in_channels=3)
              self.vgg = tl.models.vgg16()
  
          def forward(self, x):
              return x
  
      model = my_model()
      weights = model.all_weights
      self.assertGreater(len(weights), 2)
      print(len(weights))
  
imports: import os
  import unittest
  import numpy
  import tensorflow
  import tensorlayer
  from tensorlayer.layers import *
  from tensorlayer.models import *
  from tests.utils import CustomTestCase
label_desc: Use image node_id 8 for calling the Model_Core_Test obj's underlying member method code with example usage: obj.test_special_case() and returns: x